	Page		~~Page~~
Quantum Corporation – Financial Statements
Report of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm	3	46
Consolidated Balance Sheets as of March 31, 2012 and 2011	4
Consolidated Statements of Operations for the years ended March 31, 2012, 2011 ~~2010~~ and ~~2009~~2010	5	47
Consolidated ~~Balance Sheets as~~Statements of Comprehensive Income (Loss) for the years ended March 31, 2012, 2011 and 2010	6	48
Consolidated Statements of Cash Flows for the years ended March 31, 2012, 2011 ~~2010~~ and ~~2009~~2010	7	49
Consolidated Statements of Stockholders’ Deficit for the years ended March 31, 2012, 2011 ~~2010~~ and ~~2009~~2010	8	50
Notes to Consolidated Financial Statements	9	51
Schedule II – Consolidated Valuation and Qualifying Accounts	33	79

Report of Independent Registered Public Accounting Firm

To the Board of Directors and

Stockholders of Quantum Corporation:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of operations, of comprehensive income (loss), of stockholders' deficit, and of cash flows present fairly, in all material respects, the financial position of Quantum Corporation and its subsidiariesat March 31, ~~2011~~2012 and March 31, ~~2010,~~2011, and the results of their operations and their cash flows for each of the three years in the period ended March 31, ~~2011~~2012in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the accompanying index appearing under Item 15(a)(2) presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidatedfinancial statements. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of March 31, ~~2011,~~2012, based on criteria established inInternal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company's internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Seattle, Washington

June 14, ~~2011~~

2012

QUANTUM CORPORATION

CONSOLIDATED ~~STATEMENTS OF OPERATIONS~~

BALANCE SHEETS
(In thousands, except ~~per share data)~~

For the year ended March 31,
2011       2010       2009
Product revenue $ 456,903 $ 456,101 $ 556,484
Service revenue 151,095 156,477 164,664
Royalty revenue 64,272 68,849 87,824
    Total revenue 672,270 681,427 808,972
Product cost of revenue 294,375 300,568 379,595
Service cost of revenue 94,311 100,822 125,063
Restructuring charges related to cost of revenue 602 — —
    Total cost of revenue 389,88 401,390 504,658
       Gross margin 282,982 280,037 304,314
Operating expenses:
    Research and development 73,008 69,949 70,537
    Sales and marketing 122,768 114,612 141,250
    General and administrative 59,460 61,372 76,645
    Restructuring charges 3,042 4,795 6,807
    Goodwill impairment — — 339,000
258,278 250,728 634,239
       Income (loss) from operations 24,704 29,309 (329,925 )
Interest income and other, net 1,199 1,255 41
Interest expense (20,163 ) (25,515 ) (29,261 )
Gain (loss) on debt extinguishment, net of costs (1,186 ) 12,859 —
       Income (loss) before income taxes 4,554 17,908 (359,145 )
Income tax provision (benefit) 13 1,274 (881 )
       Net income (loss) $ 4,541 $ 16,634 $ (358,264 )
Net income (loss) per share:
    Basic $ 0.02 $ 0.08 $ (1.71 )
    Diluted 0.02 0.02 (1.71 )
Income (loss) for purposes of computing income (loss) per share:
    Basic $ 4,541 $ 16,634 $ (358,264 )
    Diluted 4,541 5,024 (358,264 )
Weighted average shares:
    Basic 220,888 212,672 209,041
    Diluted 229,738 223,761 209,041

par value)

	March 31, 2012			March 31, 2011
Assets
Current assets:
Cash and cash equivalents	$	51,261		$	76,010
Restricted cash		4,230			1,863
Accounts receivable, net of allowance for doubtful accounts of $217 and $403, respectively		110,840			114,969
Manufacturing inventories		61,111			48,131
Service parts inventories		39,050			45,036
Deferred income taxes		5,295			6,271
Other current assets		9,434			11,274
Total current assets		281,221			303,554
Long-term assets:
Property and equipment, less accumulated depreciation		25,440			24,980
Amortizable intangible assets, less accumulated amortization		25,763			44,711
In-process research and development		349			—
Goodwill		55,613			46,770
Other long-term assets		6,962			10,950
Total long-term assets		114,127			127,411
	$	395,348		$	430,965
Liabilities and Stockholders’ Deficit
Current liabilities:
Accounts payable	$	56,304		$	52,203
Accrued warranty		7,586			7,034
Deferred revenue, current		93,441			87,488
Current portion of long-term debt		—			1,067
Accrued restructuring charges		1,752			4,028
Accrued compensation		31,971			31,249
Income taxes payable		1,133			1,172
Other accrued liabilities		17,866			21,418
Total current liabilities		210,053			205,659
Long-term liabilities:
Deferred revenue, long-term		36,430			34,281
Deferred income taxes		4,564			6,820
Long-term debt		49,495			103,267
Convertible subordinated debt		135,000			135,000
Other long-term liabilities		6,486			7,049
Total long-term liabilities		231,975			286,417
Commitments and contingencies
Stockholders’ deficit:
Preferred stock:
Preferred stock, 20,000 shares authorized; no shares issued as of March 31, 2012 and March 31, 2011		—			—
Common stock:
Common stock, $0.01 par value; 1,000,000 shares authorized; 236,402 and 227,311 shares issued and outstanding as of March 31, 2012 and 2011, respectively		2,364			2,273
Capital in excess of par value		409,770			385,911
Accumulated deficit		(465,397	)		(456,588	)
Accumulated other comprehensive income		6,583			7,293
Stockholders’ deficit		(46,680	)		(61,111	)
	$	395,348		$	430,965

The accompanying notes are an integral part of these Consolidated Financial Statements.

QUANTUM CORPORATION

CONSOLIDATED ~~BALANCE SHEETS~~

STATEMENTS OF OPERATIONS
(In thousands, except ~~par value)~~

March 31,
2011       March 31,
2010
Assets
Current assets:
    Cash and cash equivalents $ 76,010 $ 114,947
    Restricted cash 1,863 1,896
    Accounts receivable, net of allowance for doubtful accounts of $403 and $798, respectively 114,969 103,397
    Manufacturing inventories 48,131 54,080
    Service parts inventories 45,036 53,217
    Deferred income taxes 6,271 7,907
    Other current assets 11,274 14,500
       Total current assets 303,554 349,944
Long-term assets:
    Property and equipment, less accumulated depreciation 24,980 24,528
    Intangible assets, less accumulated amortization 44,711 73,092
    Goodwill 46,770 46,770
    Other long-term assets 10,950 9,809
       Total long-term assets 127,411 154,199
$ 430,965 $ 504,143

Liabilities and Stockholders’ Deficit
Current liabilities:
    Accounts payable $ 52,203 $ 56,688
    Accrued warranty 7,034 5,884
    Deferred revenue, current 87,488 94,921
    Current portion of long-term debt 1,067 1,884
    Current portion of convertible subordinated debt — 22,099
    Accrued restructuring charges 4,028 3,795
    Accrued compensation 31,249 31,237
    Income taxes payable 1,172 2,594
    Other accrued liabilities 21,418 23,555
       Total current liabilities 205,659 242,657
Long-term liabilities:
    Deferred revenue, long-term 34,281 30,724
    Deferred income taxes 6,820 8,676
    Long-term debt 103,267 305,899
    Convertible subordinated debt 135,000 —
    Other long-term liabilities 7,049 7,444
       Total long-term liabilities 286,417 352,743
Commitments and contingencies
Stockholders’ deficit:
    Preferred stock:
       Preferred stock, 20,000 shares authorized; no shares issued as of March 31, 2011 and
          March 31, 2010 — —
    Common stock:
       Common stock, $0.01 par value; 1,000,000 shares authorized; 227,311 and 214,946
          shares issued and outstanding as of March 31, 2011 and 2010, respectively 2,273 2,149
       Capital in excess of par value 385,911 361,374
       Accumulated deficit (456,588 ) (461,129 )
       Accumulated other comprehensive income 7,293 6,349
Stockholders’ deficit (61,111 ) (91,257 )
$ 430,965 $ 504,143

~~The accompanying notes are an integral part of these Consolidated Financial Statements.~~

per share data)

	For the year ended March 31,
	2012			2011			2010
Product revenue	$	451,340		$	456,903		$	456,101
Service revenue		144,364			151,095			156,477
Royalty revenue		56,666			64,272			68,849
Total revenue		652,370			672,270			681,427
Product cost of revenue		290,376			294,375			300,568
Service cost of revenue		88,459			94,311			100,822
Restructuring charges (benefit) related to cost of revenue		(300	)		602			—
Total cost of revenue		378,535			389,288			401,390
Gross margin		273,835			282,982			280,037
Operating expenses:
Research and development		74,365			73,008			69,949
Sales and marketing		130,938			122,768			114,612
General and administrative		62,910			59,460			61,372
Restructuring charges		1,930			3,042			4,795
Total operating expenses		270,143			258,278			250,728
Gain on sale of patents		1,500			—			—
Income from operations		5,192			24,704			29,309
Other income and expense		(118	)		1,199			1,255
Interest expense		(10,686	)		(20,163	)		(25,515	)
Gain (loss) on debt extinguishment, net of costs		(2,310	)		(1,186	)		12,859
Income (loss) before income taxes		(7,922	)		4,554			17,908
Income tax provision		887			13			1,274
Net income (loss)	$	(8,809	)	$	4,541		$	16,634
Net income (loss) per share:
Basic	$	(0.04	)	$	0.02		$	0.08
Diluted		(0.04	)		0.02			0.02

Weighted average shares:
Basic		232,599			220,888			212,672
Diluted		232,599			229,738			223,761

~~QUANTUM CORPORATION~~

~~CONSOLIDATED STATEMENTS OF CASH FLOWS~~

~~(In thousands)~~

For the year ended March 31,
2011       2010       2009
Cash flows from operating activities:
    Net income (loss) $ 4,541 $ 16,634 $ (358,264 )
    Adjustments to reconcile net income (loss) to net cash provided by operating activities:
       Depreciation 11,657 12,098 15,452
       Amortization 30,304 38,461 42,291
       Service parts lower of cost or market adjustment 13,796 11,424 20,691
       (Gain) loss on debt extinguishment 1,186 (15,613 ) —
       Goodwill impairment — — 339,000
       Deferred income taxes (184 ) (466 ) (352 )
       Share-based compensation 10,421 9,789 10,592
       Other non-cash writeoffs 302 — —
       Changes in assets and liabilities:
          Accounts receivable (14,935 ) 4,454 75,132
          Manufacturing inventories (1,460 ) 2,328 6,591
          Service parts inventories 1,955 3,217 1,658
          Accounts payable (1,466 ) 11,495 (52,692 )
          Accrued warranty 1,150 (5,268 ) (8,710 )
          Deferred revenue (3,876 ) 9,484 11,515
          Accrued restructuring charges 227 (917 ) 968
          Accrued compensation (302 ) 3,824 (4,335 )
          Income taxes payable (1,454 ) (2,239 ) 1,794
          Other assets and liabilities 465 1,459 (12,231 )
Net cash provided by operating activities 52,327 100,164 89,100
Cash flows from investing activities:
       Purchases of property and equipment (12,339 ) (8,595 ) (5,423 )
       (Increase) decrease in restricted cash 32 (112 ) (295 )
       Return of principal from other investments 2,204 166 1,038
Net cash used in investing activities (10,103 ) (8,541 ) (4,680 )
Cash flows from financing activities:
       Borrowings of long-term debt, net — 120,042 —
       Repayments of long-term debt (203,449 ) (61,934 ) (92,000 )
       Borrowings of convertible subordinated debt, net 130,022 — —
       Repayments of convertible subordinated debt (22,099 ) (122,288 ) —
       Payment of taxes due upon vesting of restricted stock (2,307 ) (1,069 ) (779 )
       Proceeds from issuance of common stock 16,547 2,851 2,738
Net cash used in financing activities (81,286 ) (62,398 ) (90,041 )
Effect of exchange rate changes on cash and cash equivalents 125 190 (997 )
Net increase (decrease) in cash and cash equivalents (38,937 ) 29,415 (6,618 )
Cash and cash equivalents at beginning of period 114,947 85,532 92,150
Cash and cash equivalents at end of period $ 76,010 $ 114,947 $ 85,532
Supplemental disclosure of cash flow information:
Cash paid (received) during the year for:
          Interest $ 16,478 $ 24,781 $ 26,606
          Income taxes, net of refunds $ 1,868 $ 1,856 $ (926 )

~~The accompanying notes are an integral part of these Consolidated Financial Statements.~~

~~QUANTUM CORPORATION~~

~~CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT~~

~~(In thousands)~~

Accumulated
Common Stock Capital Other
in Excess of Retained Comprehensive
Shares       Amount       Par Value       Deficit       Income       Total
Balances as of March 31, 2008 206,927 $ 2,069 $ 337,332 $ (119,499 ) $          8,102 $ 228,004
Comprehensive loss:
       Net loss — — — (358,264 ) — (358,264 )
Other comprehensive loss:
       Foreign currency translation adjustments — — — — (2,850 ) (2,850 )
       Net unrealized gain on revaluation of long-term
       intercompany balance, net of tax of $160 — — — — 600 600
       Comprehensive loss (360,514 )
Shares issued under employee stock purchase plan 1,938 19 2,633 — — 2,652
Shares issued under employee stock incentive
       plans, net 1,366 14 (707 ) — — (693 )
Share-based compensation expense — — 10,592 — — 10,592
Balances as of March 31, 2009 210,231 2,102 349,850 (477,763 ) 5,852 (119,959 )
Comprehensive income:
       Net income — — — 16,634 — 16,634
Other comprehensive income:
       Foreign currency translation adjustments — — — — 459 459
       Net unrealized gain on revaluation of long-term
       intercompany balance, net of tax of $10 — — — — 38 38
       Comprehensive income 17,131
Shares issued under employee stock incentive
       plans, net 4,715 47 1,735 — — 1,782
Share-based compensation expense — — 9,789 — — 9,789
Balances as of March 31, 2010 214,946 2,149 361,374 (461,129 ) 6,349 (91,257 )
Comprehensive income:
       Net income — — — 4,541 — 4,541
Other comprehensive income:
       Foreign currency translation adjustments — — — — 1,083 1,083
       Net unrealized loss on revaluation of long-term
       intercompany balance, net of tax of $37 — — — — (139 ) (139 )
       Comprehensive income 5,485
Shares issued under employee stock purchase plan 3,234 32 3,912 — — 3,944
Shares issued under employee stock incentive
       plans, net 9,131 92 10,204 — — 10,296
Share-based compensation expense — — 10,421 — — 10,421
Balances as of March 31, 2011 227,311 $ 2,273 $   385,911 $ (456,588 ) $ 7,293 $ (61,111 )

The accompanying notes are an integral part of these Consolidated Financial Statements.

QUANTUM CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands)

	For the year ended March 31,
	2012			2011			2010
Net income (loss)	$	(8,809	)	$	4,541		$	16,634
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments		(513	)		1,083			459
Net unrealized gain (loss) on revaluation of long-term intercompany balances, net of taxes of $(52), $(37) and $10, respectively		(197	)		(139	)		38
Total other comprehensive income (loss)		(710	)		944			497
Total comprehensive income (loss)	$	(9,519	)	$	5,485		$	17,131

The accompanying notes are an integral part of these Consolidated Financial Statements.

QUANTUM CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

	For the year ended March 31,
	2012			2011			2010
Cash flows from operating activities:
Net income (loss)	$	(8,809	)	$	4,541		$	16,634
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation		11,774			11,657			12,098
Amortization		23,101			30,304			38,461
Service parts lower of cost or market adjustment		10,736			13,796			11,424
(Gain) loss on debt extinguishment		2,310			1,186			(15,613	)
Deferred income taxes		(1,280	)		(184	)		(466	)
Share-based compensation		13,737			10,421			9,789
Other non-cash writeoffs		—			302			—
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable		4,134			(14,935	)		4,454
Manufacturing inventories		(21,373	)		(1,460	)		2,328
Service parts inventories		3,642			1,955			3,217
Accounts payable		4,107			(1,466	)		11,495
Accrued warranty		552			1,150			(5,268	)
Deferred revenue		8,073			(3,876	)		9,484
Accrued restructuring charges		(2,284	)		227			(917	)
Accrued compensation		810			(302	)		3,824
Income taxes payable		12			(1,454	)		(2,239	)
Other assets and liabilities		(3,582	)		465			1,459
Net cash provided by operating activities		45,660			52,327			100,164
Cash flows from investing activities:
Purchases of property and equipment		(11,414	)		(12,339	)		(8,595	)
(Increase) decrease in restricted cash		(2,505	)		32			(112	)
Return of principal from other investments		97			2,204			166
Payment for business acquisition, net of cash acquired		(8,152	)		—			—
Net cash used in investing activities		(21,974	)		(10,103	)		(8,541	)
Cash flows from financing activities:
Borrowings of long-term debt, net		48,535			—			120,042
Repayments of long-term debt		(104,334	)		(203,449	)		(61,934	)
Borrowings of convertible subordinated debt, net		—			130,022			—
Repayments of convertible subordinated debt		—			(22,099	)		(122,288	)
Payment of taxes due upon vesting of restricted stock		(2,944	)		(2,307	)		(1,069	)
Proceeds from issuance of common stock		10,390			16,547			2,851
Net cash used in financing activities		(48,353	)		(81,286	)		(62,398	)
Effect of exchange rate changes on cash and cash equivalents		(82	)		125			190
Net increase (decrease) in cash and cash equivalents		(24,749	)		(38,937	)		29,415
Cash and cash equivalents at beginning of period		76,010			114,947			85,532
Cash and cash equivalents at end of period	$	51,261		$	76,010		$	114,947
Supplemental disclosure of cash flow information:
Fair value of common stock issued for business combination	$	2,767		$	—		$	—
Purchases of property and equipment included in accounts payable		1,902			—			—
Cash paid during the year for:
Interest		8,266			16,478			24,781
Income taxes, net of refunds		1,857			1,868			1,856

The accompanying notes are an integral part of these Consolidated Financial Statements.

QUANTUM CORPORATION
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT
(In thousands)

				Capital in Excess of Par Value		Retained Deficit			Accumulated Other Comprehensive Income			Total

	Common Stock
	Shares	Amount
Balances as of March 31, 2009	210,231	$	2,102	$	349,850	$	(477,763	)	$	5,852		$	(119,959	)
Net income	—		—		—		16,634			—			16,634
Foreign currency translation
adjustments	—		—		—		—			459			459
Net unrealized gain on revaluation
of long-term intercompany
balance, net of tax of $10	—		—		—		—			38			38
Shares issued under employee stock
incentive plans, net	4,715		47		1,735		—			—			1,782
Share-based compensation expense	—		—		9,789		—			—			9,789
Balances as of March 31, 2010	214,946		2,149		361,374		(461,129	)		6,349			(91,257	)
Net income	—		—		—		4,541			—			4,541
Foreign currency translation
adjustments	—		—		—		—			1,083			1,083
Net unrealized loss on revaluation of
long-term intercompany balance,
net of tax of $(37)	—		—		—		—			(139	)		(139	)
Shares issued under employee stock
purchase plan	3,234		32		3,912		—			—			3,944
Shares issued under employee stock
incentive plans, net	9,131		92		10,204		—			—			10,296
Share-based compensation expense	—		—		10,421		—			—			10,421
Balances as of March 31, 2011	227,311		2,273		385,911		(456,588	)		7,293			(61,111	)
Net loss	—		—		—		(8,809	)		—			(8,809	)
Foreign currency translation
adjustments	—		—		—		—			(513	)		(513	)
Net unrealized loss on revaluation of
long-term intercompany balance,
net of tax of $(52)	—		—		—		—			(197	)		(197	)
Shares issued under employee stock
purchase plan	3,036		31		5,012		—			—			5,043
Shares issued under employee stock
incentive plans, net	5,084		51		2,352		—			—			2,403
Shares issued in connection with
business acquisition	971		9		2,758		—			—			2,767
Share-based compensation expense	—		—		13,737		—			—			13,737
Balances as of March 31, 2012	236,402	$	2,364	$	409,770	$	(465,397	)	$	6,583		$	(46,680	)

The accompanying notes are an integral part of these Consolidated Financial Statements.

QUANTUM CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1: BASIS OF PRESENTATION

Quantum Corporation (“Quantum”, the “Company”, “us” or “we”), founded in 1980, is a ~~leading~~ global ~~storage company specializing~~expert in ~~backup, recovery~~data protection and ~~archive solutions. Combining focused expertise, customer-driven innovation,~~big data management. We provide solutions for storing and ~~platform independence, we provide~~protecting information in physical, virtual, cloud and big data environments that are designed to help customers be certain they are maximizing the value of their data over its entire lifecycle. With our solutions, customers can better adapt in a ~~comprehensive, integrated range~~world of ~~disk, tape~~continuing change by keeping and ~~software solutions supported by our sales~~protecting more data for a longer period of time while reducing costs and ~~service organization.~~increasing return on investment. We work closely with a broad network of distributors, value-added resellers (“VARs”), direct marketing resellers (“DMRs”), original equipment manufacturers (“OEMs”) and other suppliers to ~~solve~~meet customers’ evolving data protection ~~retention~~ and big data management ~~challenges.~~needs. Our stock is traded on the New York Stock Exchange ~~(“NYSE”)~~ under the symbol ~~“QTM.”~~

QTM.

The accompanying Consolidated Financial Statements include the accounts of Quantum and our wholly-owned subsidiaries. On June 13, 2011, we acquired Pancetera Software, Inc. (“Pancetera”), and Pancetera’s results of operations are included in our Consolidated Statements of Operations from that date. All ~~material~~ intercompany accounts and transactions have been eliminated. The preparation of our Consolidated Financial Statements in conformity with generally accepted accounting principles (“GAAP”) in the U.S. requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the period. We base estimates on historical experience and on various assumptions about the future that are believed to be reasonable based on available information. Our reported financial position or results of operations may be materially different under different conditions or when using different estimates and assumptions, particularly with respect to significant accounting policies, which are discussed below. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in ~~subsequent periods~~the current period to reflect ~~more~~this current information.

NOTE 2: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Revenue Recognition

Revenue consists of sales of hardware, software and services, as well as royalties we earn for the license of certain intellectual property. Revenue is recognized from the sale of products and services when it is realized or realizable and earned. Revenue is considered realized and earned when: persuasive evidence of an arrangement exists; delivery has occurred or services have been rendered; the price to the buyer is fixed or determinable; and when collectibility is reasonably assured. Royalty revenue is recognized when earned or amounts can be reasonably estimated.

Product Revenue — Hardware

Revenue for hardware products sold to distributors, VARs, DMRs, OEMs and end users is generally recognized upon shipment. When significant post-delivery obligations exist, the related revenue is deferred until such obligations are fulfilled. If there are customer acceptance criteria in the contract, we recognize revenue upon end user acceptance, which typically occurs after delivery and installation are completed.

In the period revenue is recognized, allowances are provided for estimated future price adjustments, such as rebates, price protection and future product returns. These allowances are based on programs in existence at the time revenue is recognized, plans regarding future price adjustments, the customers’ master agreements and historical product return rates. Since we have historically been able to reliably estimate the amount of allowances required, we recognize revenue, net of projected allowances, upon shipment to our customers. If we were unable to reliably estimate the amount of revenue adjustments in any specific reporting period, then we would be required to defer recognition of the revenue until the rights had lapsed and we were no longer under any obligation to reduce the price or accept the return of the product.

Product Revenue — Software

Software revenue is generally recognized upon shipment or electronic delivery and when vendor-specific objective evidence (“VSOE”) of fair value for undelivered elements exists. For software arrangements with multiple elements, the residual method is used to determine the amount of product revenue to be recognized. Under the residual method, the VSOE of fair value for the undelivered elements is deferred and the remaining portion of the arrangement consideration is recognized as product revenue, assuming all other revenue recognition criteria of appropriate revenue guidance have been met. Revenue from post-contract customer support agreements, which entitle customers to both telephone support and any unspecified upgrades and enhancements during the term of the agreement, is recognized ratably over the term of the support agreement.

We license certain software to customers under licensing agreements that allow those customers to embed our software into specific products they offer. As consideration, licensees pay us a fee based on the amount of sales of their products that incorporate our software. On a periodic and timely basis, the licensees provide us with reports listing their sales to end users for which they owe us license fees. As the reports substantiate delivery has occurred, we recognize revenue based on the information in these reports or when amounts can be reasonably estimated.

Service Revenue

Revenue for service is generally recognized upon services being rendered. Service revenue consists of customer field support agreements for our hardware products, installation, professional services and out-of-warranty repairs. For customer field support agreements, revenue equal to the separately stated price of these service contracts for our hardware products is initially deferred and recognized as revenue ratably over the contract period. Installation and professional services are not considered essential to the functionality of our products as these services do not alter the product capabilities, do not require specialized skills and may be performed by our customers or other vendors. Installation and professional services are recognized upon completion. Out-of-warranty repair revenue is recognized upon completion of the repair.

Royalty Revenue

We license certain intellectual property to third party manufacturers under arrangements that are represented by master contracts. The master contracts give the third party manufacturers rights to the intellectual property which include allowing them to either manufacture or include the intellectual property in products for resale. As consideration, the licensees pay us a per-unit royalty for sales of their products that incorporate our intellectual property. On a periodic and timely basis, the licensees provide us with reports listing units sold to end users subject to the royalties. As the reports substantiate delivery has occurred, we recognize revenue based on the information in these reports or when amounts can be reasonably estimated.

Multiple Element Arrangements

For multiple deliverable revenue arrangements with customers which are not subject to software revenue guidance, we separate the deliverables based on specific criteria, assign an estimated selling price to each deliverable based on the selling price hierarchy using VSOE, third-party evidence of selling price (“TPE”) or estimated selling price (“ESP”) and allocate the total arrangement consideration using the relative selling price method. When VSOE cannot be established we attempt to establish the selling price of each element based on TPE. TPE is determined based on competitor prices for largely interchangeable products when sold separately. When we are unable to establish selling price using VSOE or TPE, we use ESP. For ESP, we consider our discounting and internal pricing practices. Additionally, for certain transactions we evaluate whether any undelivered elements are essential to the functionality of the delivered elements in order to determine the appropriate timing of revenue recognition. If specific criteria are not met, the arrangement is accounted for as one unit of accounting which results in revenue being deferred until the earlier of when such criteria are met, when the last undelivered element is delivered or ratably over the contract term as appropriate.

Service Cost of Revenue

We classify expenses as service cost of revenue by estimating the portion of our total cost of revenue that relates to providing field support to our customers under contract, installation, integration and repair services. These estimates are based upon a variety of factors, including the nature of the support activity and the level of infrastructure required to support the activities from which we earn service revenue. In the event our service business changes, our estimates of cost of service revenue may be impacted. Service cost of revenue excludes costs associated with basic warranty support on new products.

Shipping and Handling Fees

Shipping and handling fees are included in cost of revenue and were $20.3 million, $22.2 million ~~$26.1 million~~ and ~~$36.3~~$26.1 million in fiscal 2012, 2011 and 2010, ~~and 2009,~~ respectively.

Research and Development Costs

Expenditures relating to the development of new products and processes are expensed as incurred. These costs include expenditures for employee compensation, materials used in the development effort, other internal costs, as well as expenditures for third party professional services. We have determined that technological feasibility for our software products is reached shortly before the products are released to manufacturing. Costs incurred after technological feasibility is established have not been material. We expense software-related research and development costs as incurred.

Advertising Expense

We expense advertising costs as incurred. Advertising expense for the years ended March 31, 2012, 2011 and 2010 ~~and 2009~~ was $4.3 million, $5.0 million and $3.9 million, ~~and $3.2 million,~~ respectively.

Restructuring Charges

In recent periods and over the past several years, we have recorded significant restructuring charges related to the realignment and restructuring of our business operations. These charges represent expenses incurred in connection with strategic planning, certain cost reduction programs and acquisition integrations that we have implemented and consist of the cost of involuntary termination benefits, facilities charges, asset write-offs and other costs of exiting activities or geographies.

The charges for involuntary termination costs and associated expenses often require the use of estimates, primarily related to the number of employees to be paid severance and the amounts to be paid, largely based on years of service and statutory requirements. Assumptions to estimate facility exit costs include the ability to secure sublease income largely based on market conditions, the likelihood and amounts of a negotiated settlement for contractual lease obligations and other exit costs. Other estimates for restructuring charges consist of the realizable value of assets including associated disposal costs and termination fees with third parties for other contractual commitments.

Share-Based Compensation

We account for share-based compensation using the Black-Scholes stock option pricing model to estimate the fair value of share-based awards at the date of grant. The Black-Scholes model requires the use of highly subjective assumptions, including expected life, expected volatility and expected risk-free rate of return. Other reasonable assumptions could provide differing results. We calculate a forfeiture rate to estimate the share-based awards that will ultimately vest based on types of awards and historical experience. Additionally, for awards which are performance based, we make estimates as to the probability of the underlying performance being achieved.

Foreign Currency Translation and Transactions

Assets, liabilities and operations of foreign offices and subsidiaries are recorded based on the functional currency of the entity. For a majority of our foreign operations, the functional currency is the U.S. dollar. The assets and liabilities of foreign offices with a local functional currency are translated, for consolidation purposes, at current exchange rates from the local currency to the reporting currency, the U.S. dollar. The resulting gains or losses are reported as a component of other comprehensive ~~income within stockholders’ deficit.~~income. Foreign exchange gains and losses from changes in the exchange rates underlying intercompany balances that are of a long-term investment nature are also reported as a component of other comprehensive income. Assets and liabilities denominated in other than the functional currency are remeasured each month with the remeasurement gain or loss recorded in ~~interest~~other income and ~~other, net~~expense in the Consolidated Statements of Operations. Foreign exchange gains and losses from changes in the exchange rates underlying intercompany balances that are of a long-term investment nature are reported in accumulated other comprehensive income in our Consolidated Balance Sheets. Foreign currency gains and losses recorded in ~~interest~~other income and ~~other, net~~expense were a $0.1 million loss in fiscal 2012, a $0.3 million gain in fiscal 2011 and a $0.6 million loss in fiscal ~~2010 and a $2.1 million loss in fiscal 2009.~~

2010.

Income Taxes

We recognize deferred tax assets and liabilities due to the effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. We also reduce deferred tax assets by a valuation allowance if it is more likely than not that some or all of the deferred tax asset will not be realized.

We recognize the benefit from a tax position only if it is more-likely-than-not that the position would be sustained upon audit based solely on the technical merits of the tax position. The calculation of our tax liabilities requires judgment related to uncertainties in the application of complex tax regulations. We recognize liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. It is inherently difficult and subjective to estimate such amounts, as we have to determine the probability of various possible outcomes. We reevaluate these uncertain tax positions on a quarterly basis. This evaluation is based on factors including, but not limited to, changes in facts or circumstances, changes in tax law, effectively settled issues under audit and new audit activity. ~~Such a~~A change in recognition or measurement would result in the recognition of a tax benefit or an additional tax charge to the provision.

We recognize interest and penalties related to uncertain tax positions in the income tax provision ~~(benefit)~~ in the Consolidated Statements of Operations. To the extent accrued interest and penalties do not become payable, amounts accrued will be reduced and reflected as a reduction of the overall income tax provision in the period that such determination is made.

Cash Equivalents, Restricted Cash and Other Investments

We consider all highly liquid debt instruments with a maturity of 90 days or less at the time of purchase to be cash equivalents. Cash equivalents are carried at fair value, which approximates their cost.

Restricted cash is comprised of bank guarantees and similar required minimum ~~balances that~~balancesthat serve as cash collateral in connection with various items including insurance requirements, value added taxes, ongoing tax audits and leases in certain countries.

We also hold investments in private technology venture limited partnerships. These investments individually represent voting ownership interests of less than 20%. Ownership interests in these limited partnerships are accounted for under the equity method unless our interest is so minor (typically less than 5%) that we have virtually no influence over the partnership operating and financial policies, in which case the cost method is used. Currently, our investments in these limited partnerships are accounted for using the equity method.

Investments in other privately held companies are accounted for under the cost method unless we hold a significant stake. We review non-marketable equity investments on a regular basis to determine if there has been any impairment of value which is other than temporary by reviewing their financial information, gaining knowledge of any new financing or other business agreements and assessing their operating viability.

Allowance for Doubtful Accounts

We perform ongoing credit evaluations of our customers’ financial condition and, ~~generally~~for the majority of our customers, require no collateral. For customers that do not meet our credit standards, we often require a form of collateral, ~~from our customers.~~such as cash deposits or letters of credit prior to the completion of a transaction. These credit evaluations require significant judgment and are based on multiple sources of information. We analyze such factors as our historical bad debt experience, industry and geographic concentrations of credit risk, current economic trends and changes in customer payment terms. We maintain an allowance for doubtful accounts based on historical experience and expected collectibility of outstanding accounts receivable. We record bad debt expense in general and administrative expenses.

Manufacturing Inventories

Our manufacturing inventory is stated at the lower of cost or market, with cost computed on a first-in, first-out (“FIFO”) basis. Adjustments to reduce the cost of manufacturing inventory to its net realizable value, if required, are made for estimated excess, obsolete or impaired balances. Factors influencing these adjustments include declines in demand, rapid technological changes, product life cycle and development plans, component cost trends, product pricing, physical deterioration and quality issues. Revisions to these adjustments would be required if these factors differ from our estimates.

Service Parts Inventories

Our service parts inventories are stated at the lower of cost or market. We carry service parts because we generally provide product warranty for 121 to ~~36 months~~3 years and earn revenue by providing enhanced and extended warranty and repair service during and beyond this warranty period. Service parts inventories consist of both component parts, which are primarily used to repair defective units, and finished units, which are provided for customer use permanently or on a temporary basis while the defective unit is being repaired. Defective parts returned from customers that can be repaired are repaired and put back into service parts inventories at their fair value. We record adjustments to reduce the carrying value of service parts inventory to its net realizable value, and we dispose of parts with a net realizable value of zero. Factors influencing these adjustments include product life cycles, end of service life plans and volume of enhanced or extended warranty service contracts. Estimates of net realizable value involve significant estimates and judgments about the future, and revisions would be required if these factors differ from our estimates.

Property and Equipment

Property and equipment are carried at cost, less accumulated depreciation and amortization, computed on a straight-line basis over the estimated useful lives of the assets as follows:

	Machinery and equipment	3 to 5 years
	Computer equipment	3 to 5 years
	ERP software	10 years
	Other software	3 years
	Furniture and fixtures	5 years
	Other office equipment	5 years
	Leasehold improvements	Life of lease

Amortizable Intangible and Other Long-lived Assets

We review amortizable intangible and other long-lived assets (“long-lived assets”) for impairment whenever events or changes in circumstances indicate the carrying amount of such assets may not be recoverable. ~~Indicators~~The company operates as a single reporting unit for business and operating purposes, and our impairment evaluation also treats the company as a single reporting unit. Impairment indicators we consider include adverse changes in the business climate that could affect the value of our long-lived assets, changes in our stock price and resulting market capitalization relative to book value, downward revisions in our revenue outlook, decreases or slower than expected growth in sales of products and relative weakness in customer channels.

A long-lived asset or asset group that is held for use is required to be grouped with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. When an asset or asset group does not have identifiable cash flows that are largely independent of the cash flows of other assets and liabilities, the asset group for that long-lived asset includes all assets and liabilities of the entity.

We evaluate the company as a single reporting unit for business and operating purposes. We have attempted to identify cash flows at levels lower than the consolidated company; however, this is not possible because many of our revenue streams are generated by technology related to more than a single long-lived asset, and individual long-lived assets support more than one of our three reported revenue categories. In addition, the majority of our costs are, by their nature, shared costs that are not specifically identifiable with a particular long-lived asset or product line but relate to multiple products. As a result, there is a high degree of interdependency among our cash flows for levels below the consolidated company, and If we do not have identifiable cash flows for an asset group separate from the consolidated company. Therefore, we consider the consolidated company as a single asset group for purposes of impairment testing.

~~We monitor relevant market and economic conditions on a quarterly basis and perform impairment reviews when there are indicators of impairment. When we identify~~indentify impairment indicators, we evaluate ~~the~~ recoverability ~~of the asset group~~ using an undiscounted cash flow approach. Estimates of future cash flows incorporate company forecasts and our expectations of future use of our long-lived assets, and these factors are impacted by market conditions. ~~We determine~~If impairment is indicated, an impairment charge is recorded to write the remaining useful life of an asset group based on the remaining useful life of the primary asset of the group, where the primary asset is defined as the asset with the greatest cash flow generating ability. Our primary long-lived asset is an intangible technology asset supporting disk products and software license revenue. If the primary asset of the asset group does not have the longest remaining life in the group, then a sale of the asset group is assumed at the end of life of the primary asset. Our primary long-lived asset does not have the longest remaining life of long-lived assets ~~in our asset group; therefore, for purposes of impairment testing, we assume the asset group is sold after the end of the primary asset’s useful life, or our first quarter of fiscal 2015.~~

If the undiscounted cash flows, including residual value, exceed the carrying value of the consolidated company asset group we conclude no impairment of our long-lived assets exists. If the carrying value of the consolidated company asset group exceeds the undiscounted cash flows, including residual value, then we measure the impairment charge for the excess of the carrying value over thedown to their estimated fair ~~value of the asset group.~~

value.

Goodwill

We evaluate goodwill for impairment annually during the fourth quarter of our fiscal year, or more frequently when indicators of impairment are present. During fiscal 2012, we early adopted the accounting guidance that allows entities to perform a qualitative assessment to determine whether a quantitative calculation is necessary. As a result, we may perform a qualitative test, a quantitative test, or both for the annual impairment assessment. Some of the impairment indicators we consider include changes in our stock price and resulting market capitalization relative to book value, changes in the business climate, ~~negative current events, changed~~business strategy or product mix, changes to the long-term economic outlook and testing long-lived assets for recoverability. ~~Because our capital structure includes debt, we may also compare the carrying value to business enterprise value.~~ We operate as a single reporting unit and consider the company as a whole when reviewing these factors.

~~We use a two-step method for determining goodwill impairment. In step one, the fair value of the company~~ If impairment is compared to its carrying value. If the results indicate the fair value of the company is equal to or greater than its carrying value no further steps are performed. If the results indicate our fair value is less than our carrying value then a second step is performed to quantify the amount of goodwill impairment, if any.

In step two, we allocate the fair value of the company to all tangible and intangible assets and liabilities in a hypothetical sale transaction to determine the implied fair value of our goodwill. The implied fair value of goodwill is compared to its respective carrying value and any excess carrying value is recorded as a non-cash goodwill impairment charge.

~~We typically determine fair value using the income approach. For purposes of establishing inputs for the fair value calculations related to~~indicated, a goodwill impairment ~~test under~~charge is recorded to write the income approach, we derive discounted cash flows, using necessary estimates and assumptions about the future. Significant estimates and assumptions used in this analysis may include: expected future revenue growth rates, operating profit margins, working capital levels, asset lives usedgoodwill down to generate future cash flows, a discount rate, a terminal value multiple, income tax rates and utilization of net operating loss tax carryforwards. These assumptions are developed using current market conditions as well as internal projections. The discount rate considers market conditions and other relevant factors as well as the rate of return an outside investor would expect to earn. A hypothetical sale transaction may be assumed to be taxable or nontaxable based on the current tax situation of the company and other relevant market conditions. We perform a sensitivity analysis regarding the reasonableness of the concludedits implied fair ~~value of equity of the reporting unit by reviewing the concluded per share stock price and implied control premium.~~

Unanticipated changes in revenue growth rates, operating profit margins, working capital levels, asset lives used to generate cash flows, discount rates, cost of capital or income tax rates could result in a material impact on the estimated fair value of our reporting unit. We believe that the assumptions and rates used in impairment testing are reasonable, but they require judgment, and variations in any of the assumptions or rates could result in materially different calculations of impairment amounts.

value.

Accrued Warranty

We generally warrant our hardware products against defects for periods ranging from 121 to ~~36 months~~3 years from the date of sale. Our tape automation systems and disk systems may carry service agreements with customers that choose to extend or upgrade the warranty service. We provide repair services from our facility in Colorado Springs, Colorado as well as multiple third party providers inside and outside of the U.S. We use a combination of internal resources and third party service providers to supply field service and support. We continue to evaluate repair sites, and any resulting actions taken may affect the future costs of repair. If the actual costs were to differ significantly from our estimates, we would record the impact of these unforeseen costs or cost reductions in subsequent periods.

We estimate future failure rates based upon historical product failure trends as well as anticipated future failure rates if believed to be significantly different from historical trends. Similarly, we estimate future costs of repair based upon historical trends and anticipated future costs if they are expected to significantly differ, for example due to negotiated agreements with third parties. We use a consistent model and exercise considerable judgment in determining the underlying estimates. Our model requires an element of subjectivity for all of our products. For example, historical rates of return are not completely indicative of future return rates and we must therefore exercise judgment with respect to future deviations from our historical return rate. When actual failure rates differ significantly from our estimates, we record the impact ~~of these unforeseen costs or cost reductions~~ in subsequent periods and update our assumptions and forecasting models accordingly. As our newer products mature, we are able to improve our estimates with respect to these products. It is reasonably likely that assumptions will be updated for failure rates and, therefore, our accrued warranty estimate could change in the future.

Business Combinations

We allocate the purchase price paid to the assets acquired and liabilities assumed in a business combination at their estimated fair values as of the acquisition date. Any excess purchase price above the identified net tangible and intangible assets and assumed liabilities is allocated to goodwill. We consider fair value to be the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We estimate fair value using the fair value hierarchy for the tangible and intangible assets acquired as well as liabilities and contingencies assumed from the acquired company.

Derivative Financial Instruments

We recognize all derivatives, whether designated in hedging relationships or not, on the balance sheet at fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and the hedged item are recognized in earnings. If the derivative is designated as a cash flow hedge, changes in the fair value of the derivative are recorded in other comprehensive income and are recognized in the Consolidated Statements of Operations when the hedged item affects earnings. Derivatives not designated or qualifying as a hedging instrument are adjusted to fair value through earnings. We may, from time to time, enter into derivative instruments to hedge against known or forecasted market exposures.

~~Accumulated Other Comprehensive Income~~

~~Accumulated other comprehensive income, net of related tax effects, was (in thousands):~~

As of March 31,
2011 2010
Net unrealized gains on revaluation of long-term intercompany balance $ 499 $ 638
Foreign currency translation adjustment 6,794 5,711
Accumulated other comprehensive income $ 7,293 $ 6,349

Common Stock Repurchases

During fiscal 2000, the Board of Directors authorized us to repurchase up to $700 million of our common stock in open market or private transactions. As of March 31, ~~2011~~2012 and ~~2010,~~2011, there was $87.9 million remaining on our authorization to repurchase Quantum common stock. Our ability to repurchase our common stock is restricted unless we meet certain thresholds under the terms of the ~~Credit Suisse~~Wells Fargo credit agreement (“CSWF credit agreement”).

Fair Value of Financial Instruments

We use exit prices, that is the price to sell an asset or transfer a liability, to measure assets and liabilities that are within the scope of the fair value measurements guidance. We classify these assets and liabilities based on the following fair value hierarchy:

	Level 1:	Quoted (observable) market prices in active markets for identical assets or liabilities.

	Level 2:	Observable inputs other than Level 1, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

	Level 3:	Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.

~~Following is a summary table of~~

The assets ~~and liabilities~~ measured and recorded at fair value on a recurring basis ~~(in thousands):~~

March 31, 2011 March 31, 2010
Assets:
       Money market funds $ 68,560 $ 108,485
       Deferred compensation investments 1,227 1,154
Liabilities:
       Deferred compensation liabilities 1,227 1,154

~~Following~~consist of money market funds which are ~~the fair values of assets and liabilities measured and recorded at fair value on a recurring basis by input level as of March 31, 2011 (in thousands):~~

Fair Value Measurements Using Input Levels:
Level 1 Level 2 Level 3 Total
Assets:
       Money market funds $ — $ 68,560 $ — $ 68,560
       Deferred compensation investments — 1,227 — 1,227
Liabilities:
       Deferred compensation liabilities — 1,227 — 1,227

~~The above fair values are based on~~valued using quoted market prices ~~for similar assets and liabilities~~ at the respective balance sheet ~~dates.~~dates and are level 1 fair value measurements (in thousands):

	As of March 31,
	2012		2011
Money market funds	$	37,776	$	68,560

We have certain non-financial assets that are measured at fair value on a non-recurring basis when there is an indicator of impairment, and they are recorded at fair value only when an impairment is recognized. These assets include property and equipment, amortizable intangible assets, in-process research and development (“IPR&D”) and goodwill. We did not record impairments to any non-financial assets in fiscal ~~2011~~2012 or fiscal ~~2010.~~2011. We do not have any non-financial liabilities measured and recorded at fair value on a non-recurring basis.

We have financial liabilities for which we are obligated to repay the carrying value, unless the holder agrees to a lesser amount. The carrying value and fair value of these financial liabilities were as follows (in thousands):

As of March 31, 2011 As of March 31, 2010
Carrying Value Fair Value Carrying Value Fair Value
Senior secured term debt(1) $ 104,334 $ 103,812 $ 186,066 $ 175,832
Subordinated term loans(2) — — 121,717 138,301
Convertible subordinated debt(3) (4) 135,000 133,126 22,099 21,547

	As of March 31,
	2012				2011
	Carrying Value		Fair Value		Carrying Value		Fair Value
Senior secured revolving debt⁽¹⁾	$	49,495	$	49,495	$	—	$	—
Senior secured term debt⁽²⁾		—		—		104,334		103,812
Convertible subordinated debt⁽³⁾		135,000		136,350		135,000		133,126

____________________

	⁽¹⁾		Fair value based on outstanding borrowings and market interest rates.
	⁽²⁾		Fair value based on non-binding broker quotes using current market information.
~~(2)~~		~~Fair value based on publicly traded debt with comparable terms.~~
⁽³⁾		Fair value based on quoted market prices.
~~(4)~~		Carrying and fair value as of March 31, 2011 is for convertible subordinated notes issued November 2010. Carrying and fair value as of March 31, 2010 is for convertible subordinated notes issued July 2003.

Risks and Uncertainties

As is typical in the information storage industry, a significant portion of our customer base is concentrated among a small number of OEMs, distributors and large VARs. The loss of any one of our more significant customers, or a significant decrease in the sales volume with one of these significant customers, could have a material adverse effect on our results of operations and financial condition. Furthermore, if there is a downturn in general economic conditions, the resulting effect on IT spending could also have a material adverse effect on our results of operations and financial condition. We also face risks and uncertainties since our competitors in one area may be customers or suppliers in another.

A limited number of products comprise a significant majority of our sales, and due to increasingly rapid technological change in the industry, our future operating results depend on our ability to develop and successfully introduce new products.

Concentration of Credit Risk

We currently invest our excess cash in deposits with major banks and in money market funds. In the past, we have also held investments in short-term debt securities of companies with strong credit ratings from a variety of industries, and we may make investments in these securities in the future. We have not experienced any material losses on these investments and limit the amount of credit exposure to any one issuer and to any one type of investment.

We sell products to customers in a wide variety of industries on a worldwide basis. In countries or industries where we are exposed to material credit risk, we may require collateral, including cash deposits and letters of credit prior to the completion of a transaction. We do not believe we have significant credit risk beyond that provided for in the financial statements in the ordinary course of business.

Sales to our top five customers represented 34% of revenue in fiscal 2012 compared to 33% of revenue in fiscal 2011 ~~compared to~~and 37% of revenue in fiscal ~~2010 and 42%~~2010. We had no customers that comprised 10% or greater of revenue in fiscal ~~2009.~~2012. Sales to our largest customer, Dell Inc. (“Dell”), were 10% of revenue in fiscal 2011 compared to 13% of revenue in fiscal 2010 and 14% of revenue in fiscal 2009. These sales concentrations do not include revenues from sales of media that were sold directly to these customers by our licensees, for which we earn royalty revenue, or revenues from sales of products sold directly to these customers by our other customers.

2010.

Recently Adopted Accounting Pronouncements

In ~~October 2009,~~ the Financial Accounting Standards Board (“FASB”) amended the accounting standards for multiple deliverable revenue arrangements which changed how the deliverables in an arrangement should be separated and how the consideration should be allocated using the relative selling price method. This guidance requires an entity to allocate revenue in an arrangement using the estimated selling prices of deliverables if a vendor does not have vendor-specific objective evidence of selling price or third-party evidence of selling price and eliminates the use of the residual method except as allowed for in specific software revenue guidance.

Also in October 2009, the FASB issued guidance which amended the scope of software revenue recognition guidance. Tangible products containing software and nonsoftware components that function together to deliver the tangible product’s essential functionality are no longer within the scope of software revenue guidance and are accounted for based on other applicable revenue recognition guidance. In addition, this amendment requires that hardware components of a tangible product containing software be excluded from the software revenue guidance.

~~We elected to early adopt these standards at the beginning of our~~ first ~~fiscal~~ quarter of ~~2011 on a prospective basis~~fiscal 2012, we adopted the goodwill impairment guidance for ~~applicable transactions originating~~reporting units with zero or ~~materially modified on or after April 1, 2010. The adoption~~negative carrying amounts. Adoption of ~~these standards~~this standard did not have ~~a material~~an impact on our financial position or results of operations.

In the first quarter of fiscal 2012, we adopted the guidance for disclosure of supplementary pro forma information for business combinations. Adoption of this standard did not have an impact on our financial position or results of operations, other than the additional disclosures included in the notes to the Consolidated Financial Statements.

In the fourth quarter of fiscal 2012, we early adopted the guidance regarding the presentation of other comprehensive income. We elected to present other comprehensive income in two separate but consecutive statements of net income and its components followed immediately by a statement of other comprehensive income (loss). Adoption of this standard did not have an impact on our financial position or results of operations, other than the additional statement in the Consolidated Financial Statements.

In the fourth quarter of fiscal 2012, we early adopted the guidance that allows entities to perform a qualitative assessment for step one goodwill impairment testing. Adoption of this standard did not have an impact on our financial position or results of operations.

Recent Accounting Pronouncements

In ~~December 2010,~~May 2011, the ~~FASB~~Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. ~~2010-28,~~ 2011-04,~~Intangibles—Goodwill~~Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and ~~Other (Topic 350), When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts~~Disclosure Requirements in U.S. GAAP and IFRSs (“ASU ~~2010-28”~~2011-04”), which ~~modifies Step 1~~amends the accounting standards for fair value measurements and disclosures. ASU 2011-04 provides clarifications about the application of ~~the goodwill impairment test for reporting units with zero or negative carrying amounts. For those reporting units, an entity is required~~existing fair value measurement and disclosure requirements. In addition, ASU 2011-04 changes how to ~~perform Step 2~~measure fair value of ~~the goodwill impairment test if it is more likely than not that~~financial instruments managed within a ~~goodwill impairment exists. In determining whether it is more likely than not that a goodwill impairment exists, an entity should consider whether there~~portfolio and how to apply premiums and discounts. There are ~~any adverse qualitative factors indicating that an impairment may exist.~~also additional disclosures required. ASU ~~2010-28~~2011-04 is effective for fiscal years, and interim periods within those years, beginning after December 15, ~~2010.~~2011. We will apply this standard beginning in fiscal ~~2012~~2013 and do not anticipate adoption will impact our statements of financial position or results of operations.

NOTE 3: ~~CASH, CASH EQUIVALENTS AND RESTRICTED CASH~~ACQUISITION

On June 13, 2011, in order to enhance our product offerings and technology portfolio we acquired Pancetera pursuant to a statutory merger in exchange for approximately $11.0 million, comprised of $8.2 million in cash and $2.8 million in Quantum common stock. We acquired all outstanding shares of Pancetera and assumed all of Pancetera’s outstanding unvested stock options according to the option exchange ratio defined in the merger agreement with Pancetera. We also assumed unvested restricted Pancetera common stock in accordance with the merger agreement. Pancetera’s results of operations are included in our Consolidated Statements of Operations and Cash Flows from the June 13, 2011 acquisition date.

The acquisition was recorded under the acquisition method of accounting, resulting in the purchase price being allocated to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the purchase price over the assets acquired and liabilities assumed was recorded as goodwill. The allocation of assets acquired and liabilities assumed is set forth below (in thousands):

Current assets	$	46
Property and equipment		37
Amortizable intangible assets		1,795
In-process research and development		349
Goodwill		8,843
Current liabilities		(116	)
Total purchase price	$	10,954

In performing our purchase price allocation, we considered, among other factors, our intention for future use of acquired assets, analyses of historical financial performance and estimates of future performance of Pancetera’s existing and future products. The fair value of current assets, property and equipment and current liabilities was based on market prices at the acquisition date. The fair value of amortizable intangible assets and IPR&D was based, in part, on a valuation using a discounted cash flow approach and other valuation techniques as well as management’s estimates and assumptions.

The amortizable intangible assets are all related to developed technology and are included in purchased technology within Note 5 “Intangible Assets and Goodwill.” Purchased technology, which comprises products that have reached technological feasibility, was primarily related to SmartRead^®. SmartRead is patented technology, primarily comprised of a set of algorithms that reduce storage input-output when performing maintenance tasks such as backup, replication or migration of virtual machines. Pancetera products containing the SmartRead technology included SmartView^TM and SmartMotion^TM, which have been rebranded as vmPRO software solutions. Purchased technology intangible assets also include a combination of Pancetera processes, patents and trade secrets related to the design and development of these products. This proprietary know-how can be leveraged to develop new technology and improve our products. The SmartRead purchased technology intangible asset has an amortization period of four years.

IPR&D represents incomplete Pancetera research and development projects that had not reached technological feasibility as of the acquisition date. Due to the nature of IPR&D, the expected life is indeterminate and we periodically evaluate for attainment of technological feasibility or impairment. Technological feasibility is established when an enterprise has completed all planning, designing, coding and testing activities that are necessary to establish that a product can be produced to meet its design specifications including functions, features and technical performance requirements. The value assigned to IPR&D was determined by considering the importance of each project to our overall development plan, estimating costs to develop the purchased IPR&D into commercially viable products, estimating the resulting net cash flows from the projects when completed and discounting the net cash flows using a discount rate of 18% to their present value based on the percentage of completion of the IPR&D projects.

The goodwill as a result of this acquisition is not expected to be deductible for tax purposes. In addition, we incurred acquisition expenses of $0.3 million during fiscal 2012 which are included in general and administrative expense in our Consolidated Statements of Operations. The following ~~is a summary~~unaudited supplemental pro forma information presents the combined results of ~~our cash,~~operations of Quantum and Pancetera as if the acquisition had occurred as of the beginning of fiscal 2011 (in thousands):

	As of March 31
	2012			2011
Pro forma revenue	$	652,404		$	672,376
Pro forma net loss		(9,506	)		(1,303	)

NOTE 4: BALANCE SHEET DETAILS

Cash, cash equivalents and restricted cash consisted of (in thousands):

March 31, 2011 March 31, 2010
Cash $ 8,744 $ 7,276
Certificates of deposit 569 1,082
Money market funds 68,560 108,485
$ 77,873 $ 116,843

~~NOTE 4: INVENTORIES AND PROPERTY AND EQUIPMENT~~

	As of March 31
	2012		2011
Cash	$	17,715	$	8,744
Certificates of deposit		—		569
Money market funds		37,776		68,560
	$	55,491	$	77,873

Manufacturing inventories consisted of (in thousands):

March 31, 2011 March 31, 2010
Finished goods $ 19,999 $ 24,040
Work in process 7,385 3,869
Materials and purchased parts 20,747 26,171
$ 48,131 $ 54,080

	As of March 31
	2012		2011
Finished goods	$	22,122	$	19,999
Work in process		5,781		7,385
Materials and purchased parts		33,208		20,747
	$	61,111	$	48,131

Service parts inventories consisted of (in thousands):

March 31, 2011 March 31, 2010
Finished goods $ 25,348 $ 30,073
Component parts 19,688 23,144
$ 45,036 $ 53,217

	As of March 31
	2012		2011
Finished goods	$	19,202	$	25,348
Component parts		19,848		19,688
	$	39,050	$	45,036

Property and equipment consisted of (in thousands):

	As of March 31
	2012		2011
Machinery and equipment	$	162,182	$	154,206
Furniture and fixtures		7,045		7,193
Leasehold improvements		23,348		22,563

	As of March 31
	2012			2011
		192,575			183,962
Less: accumulated depreciation		(167,135	)		(158,982	)
	$	25,440		$	24,980

March 31, 2011 March 31, 2010
Machinery and equipment $ 154,206 $ 151,952
Furniture and fixtures 7,193 7,365
Leasehold improvements 22,563 22,354
$ 183,962 $ 181,671
Less: accumulated depreciation (158,982 ) (157,143 )
$ 24,980 $ 24,528

NOTE 5: ~~GOODWILL~~INTANGIBLE ASSETS AND ~~INTANGIBLE ASSETS~~

~~Goodwill~~

~~We had no changes to goodwill in fiscal 2011 and fiscal 2010, and the goodwill balance for each of the fiscal years ended March 31, 2011 and March 31, 2010 was $46.8 million.~~

Our annual impairment evaluation for goodwill in the fourth quarters of fiscal 2011 and fiscal 2010 did not indicate any impairment of our goodwill for fiscal 2011 or fiscal 2010. We were not at risk of failing step one of either the fiscal 2011 or 2010 annual impairment tests. During the third quarter of fiscal 2009, we noted the presence of several indicators of impairment and performed an interim test to determine if our goodwill was impaired and recorded an estimated impairment charge of $339.0 million. Due to the complexity of goodwill impairment testing, our impairment analysis was completed in the fourth quarter of fiscal 2009 and we determined no additional impairment charges were required.

~~The interim impairment evaluation began in the third quarter of fiscal 2009 due to the following impairment indicators:~~

~~a significant decline in our stock price, bringing market capitalization below book value;~~GOODWILL
~~a significant adverse change in the business climate;~~
~~negative current events and changed long-term economic outlook as a result of the financial market~~ ~~collapse that started at the end of the second quarter of fiscal 2009; and~~
~~our need to test long-lived assets for recoverability under applicable accounting rules.~~

~~Significant assumptions used in this impairment test to determine fair value under the income approach were:~~

~~expected future revenue growth rates ranging from -3% to 9%;~~
~~operating profit margins ranging from 7% to 21%;~~
~~working capital levels;~~
~~asset lives used to generate future cash flows;~~
~~a discount rate of 24% which is the rate of return an investor would expect to earn considering the relatively higher risk of newer hardware and software products;~~
~~a terminal value multiple of 3%;~~
~~a 38% income tax rate; and~~
~~utilization of net operating loss carryforwards.~~

When measuring for possible impairment, future cash flows were discounted at a rate that was consistent with a weighted average cost of capital for a potential market participant. The weighted average cost of capital was an estimate of the total after-tax rate of return required by debt and equity holders of a business enterprise. In developing our discount rate assumption, we first considered a single discount rate for the whole business. Then we determined the relative risk of our newer hardware and software products should be factored into the required rate of return of a potential market participant, which increased the discount rate. A growth rate, or terminal value multiple, was used to calculate the terminal value of the business. The growth rate was the expected rate at which the income stream was projected to grow beyond the specified term used in projecting cash flows.

We assumed a 38% tax rate, adjusted for partial utilization of net operating loss carryforwards based on application of Internal Revenue Code Section 382. For our step two valuation, we measured the income tax impact by considering both a taxable and a nontaxable hypothetical sale transaction. Based on prior actual transactions, we concluded that a nontaxable ~~sale to a potential market participant was more likely to occur. We recognized the associated fair value of deferred tax assets and liabilities assuming a nontaxable sale.~~

Intangible Assets

Acquired intangible assets are amortized over their estimated useful lives, which generally range from one to eight years. In estimating the useful lives of intangible assets, we considered the following factors:

The cash flow projections used to estimate the useful lives of the intangible assets showed a trend of growth that was expected to continue for an extended period of time;
Our tape automation products, disk systems and software, in particular, have long development cycles; these products have experienced long product life cycles; and
Our ability to leverage core technology into ~~backup, recovery~~data protection and big data and archive solutions and, therefore, to extend the lives of these technologies.

Acquired IPR&D is amortized over its estimated useful life once technological feasibility is reached. If IPR&D is determined to not have technological feasibility or is abandoned, we write off the IPR&D in that period.

Following is the weighted average amortization period for our amortizable intangible assets:

	Amortization
	(Years)
Purchased technology	6.2
Trademarks	~~7.5~~
~~Non-compete agreements~~	~~5.0~~6.0
Customer lists	~~7.0~~7.1
All intangible assets	~~6.6~~6.5

Intangible amortization within our Consolidated Statements of Operations for the years ended March 31, 2012, 2011 ~~2010~~ and ~~2009~~2010 follows (in thousands):

	For the year ended March 31,
	2012		2011		2010
Purchased technology	$	7,583	$	14,862	$	22,469
Trademarks		700		810		810
Non-compete agreements		32		100		100
Customer lists		12,428		12,609		12,765
	$	20,743	$	28,381	$	36,144

For the year ended March 31,
2011 2010 2009
Purchased technology $ 14,862 $ 22,469 $ 25,067
Trademarks 810 810 2,018
Non-compete agreements 100 100 100
Customer lists 12,609 12,765 13,018
$ 28,381 $ 36,144 $ 40,203

The following tables provide a summary of the carrying ~~amount~~value of amortizable intangible assets ~~that will continue to be amortized~~ (in thousands):

March 31, 2011 March 31, 2010
      Gross
Amount       Accumulated
Amortization       Net
Amount       Gross
Amount       Accumulated
Amortization       Net
Amount
Purchased technology $ 188,167 $   (176,350 ) $ 11,817 $ 188,167 $   (161,488 ) $ 26,679
Trademarks 27,260 (26,316 ) 944 27,260 (25,506 ) 1,754
Non-compete agreements 500 (468 ) 32 500 (368 ) 132
Customer lists 106,419 (74,501 ) 31,918 106,419 (61,892 ) 44,527
$ 322,346 $ (277,635 ) $ 44,711 $ 322,346 $ (249,254 ) $ 73,092

	As of March 31,
	2012							2011
	Gross Amount		Accumulated Amortization			Net Amount		Gross Amount		Accumulated Amortization			Net Amount
Purchased technology	$	182,922	$	(176,893	)	$	6,029	$	188,167	$	(176,350	)	$	11,817
Trademarks		3,900		(3,656	)		244		27,260		(26,316	)		944
Non-compete agreements		—		—			—		500		(468	)		32
Customer lists		106,419		(86,929	)		19,490		106,419		(74,501	)		31,918
	$	293,241	$	(267,478	)	$	25,763	$	322,346	$	(277,635	)	$	44,711

The total expected future amortization related to intangible assets is provided in the table below (in thousands):

Amortization
Fiscal 2012 $ 20,385
Fiscal 2013 12,834
Fiscal 2014 8,400
Fiscal 2015 3,092
Total as of March 31, 2011 $ 44,711

	Amortization
Fiscal 2013	$	13,283
Fiscal 2014		8,849
Fiscal 2015		3,541
Fiscal 2016		90
Total as of March 31, 2012	$	25,763

We did not have impairment indicators for our long-lived assets in fiscal 2012, fiscal 2011 and fiscal 2010. In fiscal ~~2009,~~2012, we ~~had impairment indicators~~wrote off $30.9 million of fully amortized intangible assets related to fiscal 2002 and ~~performed an impairment analysis~~2003 acquisitions.

Goodwill

The following provides a summary of ~~our long-lived assets. The result of our fiscal 2009 impairment analysis was that the undiscounted cash flows exceeded~~ the carrying value of goodwill (in thousands):

	Goodwill		Accumulated Impairment Losses			Net Amount
Balance March 31, 2010	$	385,770	$	(339,000	)	$	46,770
Fiscal 2011 activity		—		—			—
Balance March 31, 2011		385,770		(339,000	)		46,770
Pancetera acquisition		8,843		—			8,843
Balance March 31, 2012	$	394,613	$	(339,000	)	$	55,613

Our annual impairment evaluation for goodwill in the ~~asset group~~fourth quarter of fiscal 2012 and ~~we concluded no~~fiscal 2011 did not indicate any impairment of our ~~long-lived assets.~~

goodwill for fiscal 2012 or fiscal 2011.

NOTE 6: ACCRUED WARRANTY ~~AND INDEMNIFICATIONS~~

~~Accrued Warranty~~

The following table details the change in the accrued warranty balance (in thousands):

	For the year ended March 31,
	2012			2011
Beginning balance	$	7,034		$	5,884
Additional warranties issued		9,973			11,049
Adjustments for warranties issued in prior fiscal years		1,956			2,610
Settlements		(11,377	)		(12,509	)
Ending balance	$	7,586		$	7,034

For the year ended March 31,
      2011       2010
Beginning Balance $ 5,884 $    11,152
       Additional warranties issued 11,049 8,993
       Adjustments for warranties issued in prior fiscal years 2,610 (2,887 )
       Settlements (12,509 ) (11,374 )
Ending Balance $ 7,034 $ 5,884

We warrant our products against defects for 121 to ~~36 months.~~3 years. A provision for estimated future costs and estimated returns for credit relating to warranty is recorded when products are shipped and revenue recognized. Our estimate of future costs to satisfy warranty obligations is primarily based on historical trends and, if believed to be significantly different from historical trends, estimates of future failure rates and future costs of repair. Future costs of repair include materials consumed in the repair, labor and overhead amounts necessary to perform the repair. If future actual failure rates differ from our estimates, we record the impact in subsequent periods. If future actual costs of repair were to differ significantly from our estimates, we would record the impact of these unforeseen cost differences in subsequent periods.

~~Indemnifications~~

We have certain financial guarantees, both express and implied, related to product liability and potential infringement of intellectual property. Other than certain product liabilities recorded as of March 31, 2011 and 2010, we did not record a liability associated with these guarantees, as we have little or no history of costs associated with such indemnification requirements. Contingent liabilities associated with product liability may be mitigated by insurance coverage that we maintain.

In the normal course of business to facilitate transactions of our services and products, we indemnify certain parties with respect to certain matters. We have agreed to hold certain parties harmless against losses arising from a breach of representations or covenants, or out of intellectual property infringement or other claims made against certain parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. In addition, we have entered into indemnification agreements with our officers and directors, and our bylaws contain similar indemnification obligations to our agents.

It is not possible to determine the maximum potential amount under these indemnification agreements due to the limited history of our indemnification claims and the unique facts and circumstances involved in each particular agreement. ~~Historically, payments made by us under these agreements have not had a material impact on our operating results, financial position or cash flows.~~

NOTE 7: LONG-TERM DEBT AND CONVERTIBLE SUBORDINATED DEBT ~~AND LONG-TERM DEBT~~

Our debt consisted of the following (in thousands):

	As of March 31,
	2012		2011
Senior secured revolving debt	$	49,495	$	—
Senior secured term debt		—		104,334
Convertible subordinated debt		135,000		135,000
	$	184,495	$	239,334

Long-Term Debt

Wells Fargo Credit Agreement

On March 29, 2012, we refinanced the senior secured credit agreement with Credit Suisse (“CS credit agreement”) by entering into a senior secured credit agreement with Wells Fargo Capital Finance, LLC (“Wells Fargo”) providing a revolving credit facility up to $75 million (“WF credit agreement”). The WF credit agreement matures March 29, 2017, or August 16, 2015 if our convertible subordinated notes remain outstanding on that date. We borrowed $49.5 million on March 29, 2012 to repay all borrowings under the CS credit agreement. Amounts borrowed are included in long-term debt on the Consolidated Balance Sheets. We incurred and capitalized $1.0 million of fees related to the WF credit agreement which are included in other long-term assets in our Consolidated Balance Sheets. These fees are being amortized to interest expense over the term of the WF credit agreement.

Under the WF credit agreement, we may borrow on a revolving basis amounts to be used to refinance all debts under our CS credit agreement as well as for general purposes. The maximum principal amount that may be borrowed is the lesser of $75 million, reduced by $1.0 million per quarter commencing July 1, 2012, or the amount of the monthly borrowing base. The monthly borrowing base is comprised of a cash component, an accounts receivable component and an inventory component. We may prepay all or a portion of any amounts borrowed without penalty or premium.

The interest rate on amounts borrowed is based on an election by us of an annual rate equal to (1) a base rate established by Wells Fargo plus an applicable margin of 1.0% to 1.5%, based on availability levels under the WF credit agreement or (2) the LIBOR rate plus an applicable margin ranging from 2.0% and 2.5%, based on availability levels under the WF credit agreement.

At March 31, 2012, we had $49.5 million outstanding borrowings at an interest rate of 4.50%, and subsequently elected the LIBOR rate plus applicable margin on April 5, 2012, bringing the interest rate to 2.72%. In addition, we have letters of credit totaling $0.1 million, reducing the amounts available to borrow on the revolver to $25.4 million at March 31, 2012. Quarterly, we are required to pay a 0.375% commitment fee on undrawn amounts under the revolving credit facility.

The WF credit agreement contains customary covenants, including cross-default provisions, as well as financial covenants that require the fixed charge coverage ratio to be greater than 1.20 for the 12 month period ending on the last day of any month and average liquidity for the most recently completed month of at least $15 million during the period commencing on March 29, 2012 and ending on September 30, 2012, increasing to $20 million on October 1, 2012. In addition, to avoid triggering mandatory field audits and Wells Fargo controlling our cash receipts, we must maintain average liquidity of at least $20 million during the period commencing on March 29, 2012 and ending on September 30, 2012, increasing to $25 million on October 1, 2012. Both the fixed charge coverage ratio and average liquidity are defined in the WF credit agreement. There is also a blanket lien on all of our assets under a security agreement with Wells Fargo. As of March 31, 2012, we were in compliance with all covenants.

As of March 31,
2011 2010
Convertible subordinated debt $ 135,000 $ 22,099
Senior secured term debt 104,334 186,066
Subordinated term loans — 121,717
$ 239,334 $ 329,882

Credit Suisse Credit Agreement

On July 12, 2007, we refinanced a prior credit facility by entering into a senior secured credit agreement with Credit Suisse providing a $50 million revolving credit facility and a $400 million senior secured term loan. We borrowed $400 million on the term loan to repay all borrowings under a prior credit facility used to fund the Advanced Digital Information Corporation acquisition. We incurred and capitalized $8.1 million of loan fees related to the CS credit agreement which were included in other long-term assets in our Consolidated Balance Sheets. These fees were amortized to interest expense over the respective loan terms. Interest accrued on the term loan at our option based on either, a prime rate plus a margin of 2.5%, or a LIBOR rate plus a margin of 3.5%. During fiscal 2011, we made principal payments of $81.7 million on the CS credit agreement term loan, and in fiscal 2012 we made principal payments of $104.3 million to fully extinguish the term loan and CS credit agreement.

Subordinated Term Loans

On November 15, 2010, we paid $121.7 million plus $1.8 million in accrued and unpaid interest to settle subordinated term loans with EMC International Company. As a result of the voluntary prepayment in full of these term loans, we have satisfied all of our obligations under these loans. We funded this payment using proceeds from the 3.50% convertible subordinated notes.

Convertible Subordinated Debt

Current Notes Issued November 2010

On November 15, 2010, we issued $135 million aggregate principal amount of ~~3.50% convertible senior subordinated~~the current notes due November 15, 2015 (“current notes”) with a conversion price of $4.33 per share of our common stock. We may not redeem the notes prior to their maturity date although investors may convert the current notes into Quantum common stock until November 14, 2015 at their option. In addition, since purchasers are qualified institutional investors, as defined in Rule 144 under the Securities Act of 1933 (“Securities Act”), the current notes have not been registered under the Securities Act. We pay 3.50% interest per annum on the principal amount of the current notes semi-annually on May 15 and November 15 of each ~~year beginning in May 2011. Interest began to accrue on November 15, 2010.~~year. The terms of the current notes are governed by an agreement dated November 15, 2010 between Quantum and U.S. Bank National Association. The current notes are subordinated to any existing indebtedness and other liabilities.

We incurred and capitalized $5.0 million of loan fees in fiscal 2011 for the current notes which are included in other long-term assets in our Consolidated Balance Sheets. These fees are amortized to interest expense over the loan term.

~~Prior~~4.375% Notes Issued July 2003

On July 30, 2003, we issued 4.375% convertible subordinated notes (“the notes”) in the aggregate principal amount of $160 million in a private placement transaction. The notes were unsecured obligations subordinated in right of payment to all of our existing and future senior indebtedness. The notes matured on August 1, 2010, and were convertible at the option of the holders at any time prior to maturity into shares of Quantum common stock at a conversion price of $4.35 per share.

On June 3, 2009, $87.2 million of aggregate principal of the notes were tendered in exchange for $850 per $1,000 principal amount, or $74.1 million. We also paid $1.3 million of accrued and unpaid interest on the notes tendered. This transaction was funded by subordinated term loans described below.

On June 26, 2009, we entered into a private transaction with a noteholder to purchase $50.7 million of aggregate principal amount of notes for $48.2 million. We also paid $0.9 million in accrued and unpaid interest on the notes. We funded this transaction with $2.8 million of our own funds and the remaining $46.3 million with subordinated term loans described below.

On July 30, 2010, we paid $22.1 million plus $0.5 million in accrued and unpaid interest to redeem the 4.375% convertible subordinated notes outstanding at that date in accordance with the contractual terms at maturity. These notes matured August 1, 2010. ~~We funded this payment with cash on hand.~~

Gain (Loss) on Debt Extinguishment, Net of Costs

In fiscal 2012, in connection with fully extinguishing the CS term loan and credit agreement on March 29, 2012, we wrote off $2.3 million of unamortized debt costs related to the CS term loan and credit agreement.

In fiscal 2011, in connection with the repayment of our subordinated term loans on November 15, 2010, we wrote off $1.2 million of unamortized debt costs related to these term loans.

In fiscal 2010, in connection with ~~the~~a tender offer and a private transaction ~~in fiscal 2010,~~for the 4.375% convertible subordinated notes issued July 2003, we recorded a gain on debt extinguishment, net of costs, of $12.9 million comprised of ~~the~~a gross gain of $15.6 million, reduced by $2.1 million in expenses and $0.6 million of unamortized debt costs related to ~~the refinanced~~these notes.

~~Long-Term Debt~~

~~Credit Suisse Credit Agreement~~

Under the CS credit agreement, the $400 million term loan matures on July 12, 2014. Interest accrues on the term loan at our option based on either, a prime rate plus a margin of 2.5%, or a LIBOR rate plus a margin of 3.5%. The interest rate on the term loan was 3.81% at March 31, 2011.

We make required quarterly principal payments on the term loan based on a formula in the CS credit agreement and we will make a final payment of all outstanding principal and interest at maturity. The term loan may be prepaid at any time. In addition, on an annual basis, we are required to perform a calculation of excess cash flow which may require an additional payment of the principal amount if the excess cash flow requirements are not met. The fiscal 2011 and 2010 calculations of excess cash flow did not require additional principal payments due to principal prepayments we have chosen to make in excess of the required quarterly amounts. During fiscal 2011 and 2010, we made principal payments of $81.7 million and $61.9 million, respectively on the CS credit agreement term loan.

Under the CS credit agreement we have the ability to borrow up to $50 million under a senior secured revolving credit facility which expires July 12, 2012. As of March 31, 2011, we have letters of credit totaling $1.2 million, reducing the amounts available to borrow on the revolver to $48.8 million. Interest accrues on the revolving credit facility at our option based on either, a prime rate plus a margin of 2.5%, or a LIBOR rate plus a margin of 3.5%. Quarterly, we are required to pay a 0.5% commitment fee on undrawn amounts under the revolving credit facility. We did not borrow from the revolving credit facility during fiscal 2011 or fiscal 2010.

There is a blanket lien on all of our assets under the CS credit agreement in addition to certain financial and reporting covenants which we are required to satisfy as a condition of the credit line and term loan including a limitation on issuing dividends or repurchasing our stock. As of March 31, 2011, we were in compliance with all covenants.

~~Amendments to Credit Suisse Credit Agreement~~

We amended our CS credit agreement on April 15, 2009 (the “First Amendment”). The First Amendment permitted us to refinance through issuance of equity or repurchase with our or any other funds the final $25 million outstanding 4.375% convertible debt. As a condition of the First Amendment, we made a prepayment of $40 million on the term loan on April 22, 2009. We funded this $40 million prepayment with $20 million of our cash on hand and $20 million from prepaid license fees under an OEM agreement. In addition, we agreed to prepay another $20 million of principal on the term loan upon refinancing a total of $135 million aggregate principal amount of the 4.375% convertible notes. We made this $20 million principal prepayment on July 6, 2009, which was funded from prepaid fees under an OEM agreement.

On October 26, 2010, we entered into a second amendment to the CS credit agreement which, among other changes, provides us with additional flexibility to issue equity securities or certain subordinated debt securities.

~~Subordinated Term Loans~~

In fiscal 2010, we entered into two loan agreements with EMC International Company (“subordinated term loans”) with similar terms and borrowed $121.7 million which was used to purchase both the prior notes tendered and repurchased in the private transaction, including related accrued interest. We incurred and capitalized $1.7 million of loan fees which were included in other long-term assets in our Consolidated Balance Sheets. These fees were amortized to interest expense over the loan terms. The subordinated term loans required quarterly interest payments at a 12.0% fixed interest rate. The subordinated term loans had maturity dates of December 31, 2011 for $21.7 million principal and September 30, 2014 for $100 million principal. The subordinated term loans allowed prepayments to the extent not prohibited under our CS credit agreement.

On November 15, 2010, we paid $121.7 million plus $1.8 million in accrued and unpaid interest to settle the subordinated term loans. As a result of the voluntary prepayment in full of these term loans, we have satisfied all of our obligations under these loans. We funded this payment using proceeds from the current convertible notes.

Debt Maturities

A summary of the scheduled maturities for our ~~convertible subordinated debt and~~ outstanding ~~term~~ debt as of March 31, ~~2011~~2012 follows (in thousands):

~~Fiscal 2012~~	$	~~1,067~~
~~Fiscal 2013~~		~~1,067~~
~~Fiscal 2014~~		~~1,067~~
~~Fiscal 2015~~		~~101,133~~
~~Fiscal 2016~~		~~135,000~~
~~Total as of March 31, 2011~~	$	~~239,334~~

	Debt Maturity
Fiscal 2013 to fiscal 2015	$	—
Fiscal 2016		135,000
Fiscal 2017		49,495
Total as of March 31, 2012	$	184,495

Derivatives

We do not engage in hedging activity for speculative or trading purposes. During the first three quarters of fiscal 2009, we had an interest rate collar instrument with a financial institution that fixed the interest rate on $87.5 million of our variable rate term loan to minimize our exposure to interest rate changes. Under the terms of the CS credit agreement, we were required to hedge floating interest rate exposure on 50% of our funded debt balance through December 31, 2009. We entered into ~~a separate~~an interest rate collar instrument with ~~another~~a financial institution that ~~fixed the interest rate on an additional $12.5 million of our variable rate term loan through December 2008 and~~ fixed the interest rate on $100.0 million of our variable rate term loan from December 31, 2008 through December 31, 2009. We incurred $1.5 million ~~and $1.3 million~~ in interest expense in fiscal 2010 ~~and fiscal 2009, respectively,~~ on ~~these collars.~~

this collar.

Our interest rate ~~collars~~collar did not meet all of the criteria necessary for hedge accounting. We recorded the fair market value in other accrued liabilities in the Consolidated Balance Sheets and the change in fair market value in ~~interest~~other income and ~~other, net~~expense in the Consolidated Statements of ~~Operations. In the Consolidated Statement of~~ Operations, ~~we recognized gains~~recognizing a gain of $1.2 million ~~and $1.0 million~~ in fiscal ~~2010 and 2009, respectively.~~2010. As of December 31, 2009, ~~both~~the interest rate ~~collars~~collar had expired.

NOTE 8: RESTRUCTURING CHARGES

Our restructuring actions are steps undertaken to reduce costs in an effort to return to consistent profitability. In fiscal 2012 and 2011, restructuring actions to consolidate operations supporting our business were the result of strategic management decisions. In fiscal 2010, ~~and 2009,~~ restructuring actions to consolidate operations supporting our business were undertaken to improve operational efficiencies and to adapt our operations in recognition of economic conditions. ~~In addition, we also had restructuring actions in fiscal 2009 as a result of partnering with a third party on certain research and development efforts.~~ The following ~~tables show~~summarizes the type of restructuring expense for fiscal 2012, 2011 ~~2010~~ and ~~2009~~2010 (in thousands):

For the year ended March 31,
2011 2010 2009
By expense type
Severance and benefits $ 3,580 $ 602 $ 8,015
Facilities (538 ) 4,792 (1,229 )
Other 602 (599 ) 21
$ 3,644 $ 4,795 $ 6,807

By cost reduction action
Consolidate operations supporting our business $ 3,644 $ 4,795 $ 6,394
Partner with third party on certain research and development efforts — — 413
$ 3,644 $ 4,795 $ 6,807

	For the year ended March 31,
	2012			2011			2010
Severance and benefits	$	1,585		$	3,580		$	602
Facilities		345			(538	)		4,792
Other		(300	)		602			(599	)
	$	1,630		$	3,644		$	4,795

Fiscal 2012

Restructuring charges in fiscal 2012 were primarily due to severance and benefits expenses of $1.6 million as a result of strategic management decisions to consolidate operations supporting our business. Most areas of the business, including international operations, were impacted by these restructuring actions. The employees impacted were in our research and development, sales and marketing and service teams. Facility restructuring charges for fiscal 2012 were primarily due to negotiating a lease settlement on a facility vacated in India. The other restructuring reversal for fiscal 2012 was due to actual payments lower than estimated on a supplier relationship exited in fiscal 2011.

Fiscal 2011

Restructuring charges in fiscal 2011 were primarily due to severance and benefits expenses of $3.6 million as a result of strategic management decisions to consolidate operations supporting our business. Most areas of the business, including international operations, were impacted by ~~this~~these restructuring ~~action.~~actions. The employees impacted were in our management, sales and marketing, research and development and service teams. The facility reversals in fiscal 2011 were primarily due to negotiating settlements for lease liabilities on two vacated facilities in the U.S. for amounts lower than the outstanding lease contracts. The other restructuring charges were costs from exiting a supplier relationship in fiscal 2011.

Fiscal 2010

For fiscal 2010, restructuring charges were primarily due to $4.8 million in remaining contractual lease payments for facilities vacated in the U.S. during fiscal 2010. We also vacated a facility in India and negotiated a settlement for an amount lower than the outstanding lease contract. Severance and benefits restructuring charges for fiscal 2010 were due largely to eliminating additional positions in the U.S. and changes in our estimates, primarily in Europe, as we completed settlement negotiations with various local authorities. The other restructuring reversal in fiscal 2010 was due to negotiating a settlement for contract termination fees related to a program cancelled in a prior year.

~~Fiscal 2009~~

During fiscal 2009, our restructuring severance and benefits resulted in a net expense of $8.0 million due primarily to our actions to consolidate operations supporting our business. The majority of our severance and benefits restructuring actions occurred in the second half of fiscal 2009 in response to the global economic recession to realign our cost structure with market opportunities. The majority of the impacted employees were U.S. sales and marketing and research and development employees; however, all areas of the business, including international operations, were impacted by these restructuring actions. Severance and benefits charges accrued in fiscal 2009 were paid to the impacted employees during fiscal 2009 and 2010.

The net reversal of facility restructuring charges in fiscal 2009 was primarily due to negotiating settlements for lease liabilities on vacated facilities in Europe for amounts lower than the outstanding lease contracts.

The following tables show the activity and the estimated timing of future payouts for accrued restructuring (in thousands):

Severance and
benefits       Facilities       Other       Total
Balance as of March 31, 2008 $         503 $ 2,732 $ 599 $ 3,834
    Restructuring costs 8,567 26 21 8,614
    Restructuring charge reversal (552 ) (1,255 ) — (1,807 )
    Cash payments (5,105 ) (615 ) (21 ) (5,741 )
    Non-cash charges and other 41 (260 ) — (219 )
Balance as of March 31, 2009 3,454 628 599 4,681
    Restructuring costs 1,182 5,047 — 6,229
    Restructuring charge reversal (580 ) (255 ) (599 ) (1,434 )
    Cash payments (3,597 ) (2,124 ) — (5,721 )
    Non-cash charges and other 35 5 — 40
Balance as of March 31, 2010 494 3,301 — 3,795
    Restructuring costs 3,586 307 602 4,495
    Restructuring charge reversal (6 ) (845 ) — (851 )
    Cash payments (1,189 ) (1,920 ) — (3,109 )
    Non-cash charges and other — — (302 ) (302 )
Balance as of March 31, 2011 $ 2,885 $ 843 $ 300 $ 4,028
Estimated timing of future payouts:
    Fiscal 2012 $ 2,885 $ 394 $ 300 $ 3,579
    Fiscal 2013 to 2016 — 449 — 449
$ 2,885 $ 843 $ 300 $ 4,028

	Severance and benefits			Facilities			Other			Total
Balance as of March 31, 2009	$	3,454		$	628		$	599		$	4,681
Restructuring costs		1,182			5,047			—			6,229
Restructuring charge reversal		(580	)		(255	)		(599	)		(1,434	)
Cash payments		(3,597	)		(2,124	)		—			(5,721	)
Non-cash charges and other		35			5			—			40
Balance as of March 31, 2010		494			3,301			—			3,795
Restructuring costs		3,586			307			602			4,495
Restructuring charge reversal		(6	)		(845	)		—			(851	)
Cash payments		(1,189	)		(1,920	)		—			(3,109	)
Non-cash charges and other		—			—			(302	)		(302	)
Balance as of March 31, 2011		2,885			843			300			4,028
Restructuring costs		1,864			345			—			2,209
Restructuring charge reversal		(279	)		—			(300	)		(579	)
Cash payments		(3,181	)		(748	)		—			(3,929	)
Assumed restructuring liability		23			—			—			23
Balance as of March 31, 2012	$	1,312		$	440		$	—		$	1,752
Estimated timing of future payouts:
Fiscal 2013	$	1,312		$	297		$	—		$	1,609
Fiscal 2014 to 2016		—			143			—			143
	$	1,312		$	440		$	—		$	1,752

The ~~$4.0~~$1.8 million restructuring accrual as of March 31, ~~2011~~2012 is primarily comprised of severance and benefits obligations, the majority of which will be paid ~~to impacted employees during the first half of~~in fiscal ~~2012.~~2013. The amounts accrued for vacant facilities will be paid over their respective lease terms, which continue through fiscal 2016. ~~The other restructuring accrual will be paid after certain mutually agreed terms are met.~~

Additional charges may be incurred in the future related to these restructurings, particularly if the actual costs associated with restructured activities are higher than estimated. Until we achieve sustained profitability, we may incur additional charges in the future related to additional cost reduction steps. Future charges that we may incur associated with future cost reductions are not estimable at this time.

NOTE 9: STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION

Description of Stock Incentive Plans

Active Stock Incentive Plans

We have a Long-Term Incentive Plan that provides for the issuance of stock options, stock appreciation rights, stock purchase rights and long-term performance awards to our employees, officers, and consultants, as well as a Nonemployee Director Equity Incentive Plan that provides for the issuance of stock options, stock appreciation rights, stock purchase rights and long-term performance awards to our nonemployee directors, collectively the “Active Plans.” These plans have authorized 79.5 million shares of stock of which ~~12.2~~7.3 million shares of stock were available for grant as of March 31, ~~2011.~~ 2012.

There are 26.5 million stock options and restricted shares outstanding under the Active Plans as of March 31, ~~2011,~~2012, which expire at various times through June ~~2017.~~

2018.

With the exception of fiscal 2010, in recent years we have primarily granted restricted stock units with a zero purchase ~~price in place of stock options to our employees.~~price. We continue to grant stock options to employees in certain circumstances. In fiscal 2010, due to a combination of factors including our share price at the beginning of the fiscal year, we primarily granted stock options to our employees. Stock options granted ~~to existing employees~~ in fiscal 2012, 2011 ~~2010~~ and ~~2009~~2010 generally vest ~~annually~~ over three to four years and have contractual terms of seven years. ~~Stock options granted to newly hired employees generally vest 25% on the first anniversary of the grant date with the remainder vesting monthly at the rate of 1/48~~th ~~over the following three years and have contractual terms of seven years.~~ Grants prior to fiscal ~~2004~~2005 had contractual terms of ten years. Stock options under the Active Plans are granted at prices determined by the Board of Directors, but at not less than the fair market value. The majority of restricted stock units granted to employees in fiscal 2012, 2011 ~~2010~~ and ~~2009~~2010 vest over two to three ~~years and restricted stock awards and units (“restricted stock”) granted prior to fiscal 2009 generally vest over two to four~~ years. Stock option and restricted stock grants to nonemployee directors typically vest over one year. Both stock options and restricted stock units granted under the Active Plans are subject to forfeiture if employment terminates.

Other Stock Option Plans

During the first quarter of fiscal 2012, we assumed outstanding unvested options and unvested restricted shares of Pancetera which were exchanged into options and restricted shares of Quantum common stock, respectively, in accordance with the merger agreement. As of June 13, 2011, Pancetera had approximately 0.8 million unvested stock options and 0.5 million unvested restricted shares outstanding. Based on the exchange ratio of 0.2403 calculated in accordance with the formula in the merger agreement, we assumed the outstanding unvested options, which are exercisable for an aggregate of 194,000 shares of Quantum common stock. Based on the relative cash and stock consideration for Pancetera shares per the merger agreement, the unvested restricted shares became 33,000 unvested restricted shares of Quantum common stock and $200,000 in cash held in escrow. The estimated fair value of unvested Pancetera options, unvested restricted shares and cash held in escrow related to future service is being recognized over the remaining service period.

In addition to the Active Plans, we have other stock option plans, including ~~certain~~ plans assumed in acquisitions, (“Other Plans”) under which stock options, stock appreciation rights, stock purchase rights, restricted stock awards and long-term performance awards to ~~our~~ employees, consultants, officers and affiliates were authorized. Stock options granted and assumed under the Other Plans generally vested over one to four years and expired ten years after the grant date and restricted stock granted under the Other Plans generally vested over one to three years. The Other Plans have been terminated and outstanding stock options granted and assumed remain outstanding and continue to be governed by the terms and conditions of the respective other stock option plan. Stock options and restricted stock granted under the Other Plans are subject to forfeiture if employment terminates. Stock options under the Other Plans were granted at prices determined by the Board of Directors, but at not less than the fair market value and stock options assumed were governed by the acquisition agreement. Stock options expire at various times through ~~May 2015.~~

June 2021.

Stock Purchase Plan

We have an employee stock purchase plan (the “Purchase Plan”) that allows for the purchase of stock at 85% of fair market value at the date of grant or the exercise date, whichever value is less. The Purchase Plan is qualified under Section 423 of the Internal Revenue Code. Under the Purchase Plan, rights to purchase shares are granted during the second and fourth quarter of each fiscal year. ~~There were 5.9 million shares available for issuance as~~Due to cancellation of ~~March 31, 2011.~~

~~During fiscal 2009, our~~rights from August 2008 through January 2010 by the Board of Directors, ~~cancelled~~there were no rights to purchase shares ~~under our Purchase Plan. On January 1,~~granted during this period. Rights to purchase shares were reinstated in February 2010 or the fourth quarter of fiscal 2010. The Purchase Plan ~~was reinstated and amended~~allows a maximum amount of two million shares to ~~set the maximum number of shares available to purchase~~be purchased in any one six month offering ~~period to no more than two million shares.~~period. Employees purchased ~~3.2~~3.0 million shares and ~~1.9~~3.2 million shares of common stock under the Purchase Plan in fiscal ~~2011~~2012 and ~~2009,~~2011, respectively. The weighted-average price of stock purchased under the Purchase Plan was ~~$1.22~~$1.66 and ~~$1.37~~$1.22 in fiscal 2012 and 2011, ~~and 2009,~~ respectively.

There were 2.9 million shares available for issuance as of March 31, 2012.

Determining Fair Value

~~Stock Options~~

We use the Black-Scholes stock option valuation model for estimating fair value of stock options granted under our plans and rights to acquire stock granted under our Purchase Plan. We amortize the fair value of stock options on a ratable basis over the requisite service periods, which are generally the vesting periods. The expected life of awards granted represents the period of time that they are expected to be outstanding. We determine the expected life based on historical experience with similar awards, giving consideration to the contractual terms, exercise patterns and post-vesting forfeitures. We estimate volatility based on the historical volatility of our common stock over the most recent period corresponding with the estimated expected life of the award. We base the risk-free interest rate used in the Black-Scholes stock option valuation model on the implied yield currently available on U.S. Treasury zero-coupon issues with an equivalent term equal to the expected life of the award. We have not paid any cash dividends on our common stock and do not anticipate paying any cash dividends in the foreseeable future. ~~Consequently, we use an expected dividend yield of zero.~~ We use historical data to estimate ~~pre-vesting stock option~~ forfeitures and record share-based compensation for those awards that are expected to vest. We adjust share-based compensation for ~~changes to the estimate of expected equity award forfeitures based on~~ actual ~~forfeiture experience. The effect of adjusting the forfeiture rate is recognized in the period the forfeiture estimate is changed.~~

forfeitures.

Stock Options

The weighted-average estimated fair values and the assumptions used in calculating ~~such~~fair values for stock options granted under the Active Plans during each fiscal period are as follows:

For the year ended March 31,
2011 2010 2009
Stock option life (in years) 4.2 3.9 4.0
Risk-free interest rate 2.02 % 2.05 % 2.54 %
Stock price volatility 106.75 % 107.67 % 56.59 %
Weighted-average grant date fair value $ 1.96 $ 0.73 $ 0.66

	For the year ended March 31,
	2012			2011			2010
Stock option life (in years)		4.0			4.2			3.9
Risk-free interest rate		1.57	%		2.02	%		2.05	%
Stock price volatility		112.33	%		106.75	%		107.67	%
Weighted-average grant date fair value	$	1.91		$	1.96		$	0.73

The ~~above assumptions were used to calculate the~~weighted-average fair value of stock options ~~granted under~~assumed from Pancetera, as well as the ~~Active Stock Incentive Plans.~~

weighted-average assumptions used in calculating these values were based on estimates at the acquisition date as follows:

Option life (in years)		5.2
Risk-free interest rate		1.65	%
Stock price volatility		100.93	%
Weighted-average fair value	$	2.67

The assumed options have a 10 year contractual life from the original grant date.

Restricted Stock

The fair value of our restricted stock is the intrinsic value as of the grant date.

Stock Purchase Plan

Under the Purchase Plan, rights to purchase shares are granted during the second and fourth quarter of each fiscal year. Due to cancellation of the August 2008 rights to purchase shares and reinstatement in January 2010, rights to purchase shares were granted in February 2010, August 2010 and February 2011. There were no rights to purchase shares granted in fiscal 2009. The weighted-average fair values and the assumptions used in calculating fair values during each fiscal period are as follows:

For the year ended March 31,
2011 2010 2009
Option life (in years) 0.50 0.50 n/a
Risk-free interest rate 0.19 % 0.15 % n/a
Stock price volatility 68.56 % 69.14 % n/a
Weighted-average grant date fair value $ 0.72 $ 0.82 n/a

	For the year ended March 31,
	2012			2011			2010
Option life (in years)		0.50			0.50			0.50
Risk-free interest rate		0.06	%		0.19	%		0.15	%
Stock price volatility		70.29	%		68.56	%		69.14	%
Weighted-average grant date fair value	$	0.82		$	0.72		$	0.82

Share-Based Compensation Expense

The following tables summarize share-based compensation expense (in thousands):

	For the year ended March 31,
	2012		2011		2010
Share-based compensation expense included in operations:
Cost of revenue	$	2,203	$	1,768	$	1,366
Research and development		3,250		2,486		2,373
Sales and marketing		4,048		3,121		2,581
General and administrative		4,236		3,046		3,469
Total share-based compensation expense	$	13,737	$	10,421	$	9,789

	For the year ended March 31,
	2012		2011		2010
Share-based compensation by type of award:
Stock options	$	2,622	$	3,586	$	3,633
Restricted stock		9,053		5,329		5,878
Stock purchase plan		2,062		1,506		278
Total share-based compensation expense	$	13,737	$	10,421	$	9,789

For the year ended March 31,
2011       2010       2009
Share-based compensation expense included in operations:
    Cost of revenue $ 1,768 $ 1,366 $ 1,419
    Research and development 2,486 2,373 2,722
    Sales and marketing 3,121 2,581 2,695
    General and administrative 3,046 3,469 3,756
Total share-based compensation expense $ 10,421 $ 9,789 $ 10,592

For the year ended March 31,
2011       2010       2009
Share-based compensation by type of award:
    Stock options $ 3,586 $ 3,633 $ 3,450
    Restricted stock 5,329 5,878 6,447
    Stock purchase plan 1,506 278 695
Total share-based compensation expense $ 10,421 $ 9,789 $ 10,592

The total share-based compensation cost capitalized as part of inventory as of March 31, ~~2011~~2012 and ~~2010~~2011 was not material. During fiscal 2012, 2011 and 2010, no tax benefit was realized for the tax deduction from stock option exercises and other awards due to tax benefit carryforwards and tax ordering requirements.

As of March 31, ~~2011,~~2012, there was ~~$2.6~~$3.0 million of total unrecognized compensation cost related to stock options granted under our plans. This unrecognized compensation cost is expected to be recognized over a weighted-average period of ~~1.3~~1.5 years. Total intrinsic value of stock options exercised for the years ended March 31, 2012, 2011 and 2010 ~~and 2009~~ was $3.7 million, $8.9 million and $1.9 million, ~~and $26,000,~~ respectively. We settle stock option exercises by issuing additional common shares.

As of March 31, ~~2011,~~2012, there was ~~$10.0~~$20.8 million of total unrecognized compensation cost related to nonvested restricted ~~stock granted under our plans.~~stock. The unrecognized compensation cost for restricted stock is expected to be recognized over a weighted-average period of 1.9 years. Total fair value of awards released during the years ended March 31, 2012, 2011 and 2010 ~~and 2009~~ was $9.4 million, $7.5 million ~~$3.1 million~~ and ~~$2.6~~$3.1 million, respectively, based on the fair value of our common stock on the date of award release. We issue additional common shares upon vesting of restricted stock units.

Stock Activity

Stock Options

A summary of activity relating to all of our stock option plans is as follows (stock options and intrinsic value in thousands):

	Stock Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding as of March 31, 2009	25,626		$	3.02
Granted	9,655			1.01
Exercised	(1,883	)		1.51
Forfeited	(1,778	)		3.32
Expired	(291	)		11.08
Outstanding as of March 31, 2010	31,329			2.40
Granted	204			2.66
Exercised	(6,634	)		1.90
Forfeited	(1,747	)		2.05
Expired	(1,072	)		5.56
Outstanding as of March 31, 2011	22,080			2.43
Granted and assumed	1,619			2.33
Exercised	(2,982	)		1.79
Forfeited	(619	)		1.90
Expired	(704	)		8.25
Outstanding as of March 31, 2012	19,394		$	2.32	2.72	$	12,695
Vested and expected to vest at March 31, 2012	19,215		$	2.32	2.69	$	12,646
Exercisable as of March 31, 2012	15,963		$	2.46	2.21	$	9,379

Stock Options       Weighted-
Average
Exercise Price       Weighted-
Average
Remaining
Contractual Term       Aggregate
Intrinsic Value
Outstanding as of March 31, 2008 28,167 $ 3.27
    Granted 2,597 1.60
    Exercised (61 ) 1.41
    Forfeited (4,159 ) 3.28
    Expired (918 ) 5.64
Outstanding as of March 31, 2009 25,626 3.02
    Granted 9,655 1.01
    Exercised (1,883 ) 1.51
    Forfeited (1,778 ) 3.32
    Expired (291 ) 11.08
Outstanding as of March 31, 2010          31,329 2.40
    Granted 204 2.66
    Exercised (6,634 ) 1.90
    Forfeited (1,747 ) 2.05
    Expired (1,072 ) 5.56
Outstanding as of March 31, 2011 22,080 $ 2.43 3.34 $ 14,275
Vested and expected to vest at March 31, 2011 21,786 $ 2.45 3.31 $ 13,862
Exercisable as of March 31, 2011 15,941 $ 2.94 2.61 $ 5,359

The following table summarizes information about stock options outstanding and exercisable as of March 31, ~~2011~~2012 (stock options in thousands):

Range of Exercise Prices Stock Options
Outstanding       Weighted-
Average
Exercise
Price       Weighted-
Average
Remaining
Contractual Life
(Years)       Stock Options
Exercisable       Weighted-
Average
Exercise
Price
$ 0.11 -     $ 0.51 108 $ 0.31 4.75 47 $ 0.32
$ 0.77 -      $ 1.08 6,689 0.98 5.14 1,193 0.97
$ 1.14 -      $ 1.71 1,898 1.44 3.73 1,684 1.47
$ 1.77 -      $ 2.54 4,302 2.13 2.50 4,204 2.13
$ 2.59 -      $ 3.82 7,696 3.23 2.45 7,463 3.25
$ 3.95 -      $ 4.55 314 4.00 3.40 277 4.00
$ 6.70 -      $ 8.34 559 6.77 1.07 559 6.77
$ 8.84 -      $ 12.02 514 10.10 0.40 514 10.10
22,080 $ 2.43 3.34 15,941 $ 2.94

Range of Exercise Prices					Stock Options Outstanding	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Stock Options Exercisable	Weighted- Average Exercise Price
$	0.11	-	$	0.63	213	$	0.52	6.57	79	$	0.42
$	0.77	-	$	0.98	5,094		0.98	4.21	3,377		0.98
$	1.00	-	$	1.42	690		1.23	3.49	635		1.23
$	1.52	-	$	2.21	4,579		2.02	1.53	4,564		2.02
$	2.29	-	$	3.42	5,850		2.91	2.69	4,340		3.04
$	3.43	-	$	4.55	2,443		3.79	1.95	2,443		3.79
$	6.70	-	$	7.50	525		6.73	0.09	525		6.73
					19,394	$	2.32	2.72	15,963	$	2.46

Expiration dates ranged from April ~~2011~~2012 to June ~~2017~~2021 for stock options outstanding at March 31, ~~2011.~~2012. Prices for stock options exercised during the three-year period ended March 31, ~~2011,~~2012, ranged from $0.11 to $3.86.

Restricted Stock

A summary of activity relating to our restricted stock follows (shares in thousands):

Shares       Weighted-Average
Grant Date
Fair Value
Nonvested at March 31, 2008 4,908 $ 2.48
    Granted 3,870 1.41
    Vested (1,887 ) 2.71
    Forfeited (633 ) 2.17
Nonvested at March 31, 2009 6,258 1.78
    Granted 2,526 1.45
    Vested (2,853 ) 2.01
    Forfeited (796 ) 0.83
Nonvested at March 31, 2010 5,135 1.64
    Granted 5,757 1.95
    Vested       (3,665 ) 1.60
    Forfeited (587 ) 1.45
Nonvested at March 31, 2011 6,640 $ 1.95

	Shares		Weighted- Average Grant Date Fair Value
Nonvested at March 31, 2009	6,258		$	1.78
Granted	2,526			1.45
Vested	(2,853	)		2.01
Forfeited	(796	)		0.83
Nonvested at March 31, 2010	5,135			1.64
Granted	5,757			1.95
Vested	(3,665	)		1.60
Forfeited	(587	)		1.45
Nonvested at March 31, 2011	6,640			1.95
Granted and assumed	6,669			3.14
Vested	(3,058	)		1.88
Forfeited	(1,390	)		2.73
Nonvested at March 31, 2012	8,861		$	2.75

NOTE 10: 401K PLAN

Substantially all of the U.S. employees are eligible to make contributions to our 401(k) savings and investment plan. We ~~matched~~typically make discretionary contributions to the plan by matching a percentage of our employees’ contributions through December 31, 2008 and could make discretionary contributions to the plan. Commencing in the fourth quarter of fiscal 2009, the plan was amended to remove automatic matching contributions and retain discretionary contributions. ~~We made discretionary contributions in fiscal 2011, fiscal 2010 and in the fourth quarter of fiscal 2009 in an amount approximating our prior matching contribution rate.~~ Employer contributions were $3.0 million, $2.6 million ~~$2.5 million~~ and ~~$2.9~~$2.5 million in fiscal 2012, 2011 and 2010, ~~and 2009,~~ respectively.

NOTE 11: INCOME TAXES

Pre-tax income (loss) reflected in the Consolidated Statements of Operations for the years ended March 31, 2012, 2011 ~~2010~~ and ~~2009 are as~~2010 follows (in thousands):

	For the year ended March 31,
	2012			2011		2010
U.S	$	(8,589	)	$	271	$	16,374
Foreign		667			4,283		1,534
	$	(7,922	)	$	4,554	$	17,908

For the year ended March 31,
2011 2010 2009
U.S. $ 271 $ 16,374 $ (361,178 )
Foreign 4,283 1,534 2,033
$ 4,554 $ 17,908 $ (359,145 )

Income tax provision ~~(benefit)~~ consists of the following (in thousands):

For the year ended March 31,
2011       2010       2009
Federal:
    Current $ (302 ) $ (465 ) $ (3,205 )
    Deferred — — —
(302 ) (465 ) (3,205 )
State:
    Current 446 (361 ) 321
    Deferred — — —
446 (361 ) 321
Foreign:
    Current 74 2,577 2,319
    Deferred (205 ) (477 ) (316 )
(131 ) 2,100 2,003
Income tax provision (benefit) $ 13 $ 1,274 $ (881 )

	For the year ended March 31,
	2012			2011			2010
Federal:
Current	$	—		$	(302	)	$	(465	)
Deferred		—			—			—
		—			(302	)		(465	)
State:
Current		301			446			(361	)
Deferred		—			—			—
		301			446			(361	)
Foreign:
Current		1,847			74			2,577
Deferred		(1,261	)		(205	)		(477	)
		586			(131	)		2,100
Income tax provision	$	887		$	13		$	1,274

The income tax provision ~~(benefit)~~ differs from the amount computed by applying the federal statutory rate of 35% to income (loss) before income taxes as follows (in thousands):

For the year ended March 31,
2011 2010 2009
Expense (benefit) at federal statutory rate $ 1,594 $ 6,268 $ (125,701 )
State taxes 380 340 312
Unbenefited losses and credits (1,235 ) (5,591 ) 127,695
Net accrual (release) of contingent tax reserves (466 ) 315 (3,154 )
Other (260 ) (58 ) (33 )
$ 13 $ 1,274 $ (881 )

	For the year ended March 31,
	2012			2011			2010
Expense (benefit) at federal statutory rate	$	(2,773	)	$	1,594		$	6,268
State taxes		301			380			340
Unbenefited losses and credits		3,471			(1,235	)		(5,591	)
Net accrual (release) of contingent tax reserves		(176	)		(466	)		315
Other		64			(260	)		(58	)
	$	887		$	13		$	1,274

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.

Significant components of deferred tax assets and liabilities are as follows (in thousands):

	As of March 31,
	2012			2011
Deferred tax assets:
Inventory valuation method	$	6,429		$	10,366
Accrued warranty expense		3,072			2,849
Distribution reserves		2,377			1,936
Loss carryforwards		54,162			50,179
Foreign tax and research and development credit carryforwards		221,459			221,354
Restructuring charge accruals		710			1,410
Other accruals and reserves not currently deductible for tax purposes		35,177			31,322
Depreciation and amortization methods		4,824			9,572
		328,210			328,988
Less valuation allowance		(252,402	)		(245,241	)
Deferred tax asset	$	75,808		$	83,747
Deferred tax liabilities:
Acquired intangibles	$	(10,186	)	$	(17,884	)
Tax on unremitted foreign earnings		(15,712	)		(16,557	)
Other		(49,179	)		(49,855	)
Deferred tax liability	$	(75,077	)	$	(84,296	)
Net deferred tax asset (liability)	$	731		$	(549	)

As of March 31,
2011       2010
Deferred tax assets:
    Inventory valuation method $ 10,366 $ 15,254
    Accrued warranty expense 2,849 2,383
    Distribution reserves 1,936 1,785
    Loss carryforwards 50,179 46,270
    Foreign tax and research and development credit carryforwards 221,354 236,472
    Restructuring charge accruals 1,410 1,537
    Other accruals and reserves not currently deductible for tax purposes 31,322 31,505
    Depreciation and amortization methods 9,572 14,448
328,988 349,654
    Less valuation allowance (245,241 ) (255,356 )
    Deferred tax asset $ 83,747 $ 94,298
Deferred tax liabilities:
    Acquired intangibles $ (17,884 ) $ (28,881 )
    Tax on unremitted foreign earnings (16,557 ) (18,053 )
    Other (49,855 ) (48,133 )
    Deferred tax liability $ (84,296 ) $ (95,067 )
Net deferred tax liability $ (549 ) $ (769 )

A reconciliation of the gross unrecognized tax benefits follows (in thousands):

For the year ended March 31,
2011       2010       2009
Beginning balance $ 33,292 $ 32,210 $ 22,572
       Settlement and effective settlements with tax authorities and related remeasurements (357 ) — (3,136 )
       Lapse of statute of limitations (228 ) (290 ) (2,430 )
       Increase in balances related to tax positions taken in prior period 82 800 —
       Decreases for tax positions taken in prior year — — (807 )
       Increases in balances related to tax positions taken during current period 223 572 16,011
Ending balance $ 33,012 $ 33,292 $ 32,210

	For the year ended March 31,
	2012			2011			2010
Beginning balance	$	33,012		$	33,292		$	32,210
Settlement and effective settlements with tax authorities and related remeasurements		(255	)		(357	)		—
Lapse of statute of limitations		(105	)		(228	)		(290	)
Increase in balances related to tax positions taken in prior period		92			82			800
Increases in balances related to tax positions taken during current period		—			223			572
Ending balance	$	32,744		$	33,012		$	33,292

During fiscal ~~2011,~~2012, we recorded a net ~~increase~~decrease in our unrecognized tax benefits. Including interest and penalties, the total unrecognized tax benefit at March 31, ~~2011~~2012 was ~~$34.0~~$33.6 million, all of which, if recognized, would favorably affect the effective tax rate.

We recognize interest and penalties related to uncertain tax positions in income tax expense. To the extent accrued interest and penalties do not become payable, amounts accrued will be reduced and reflected as a reduction of the overall income tax provision in the period that such determination is made. At March 31, ~~2011~~2012 accrued interest and penalties totaled ~~$1.0~~$0.9 million.

We file our tax returns as prescribed by the laws of the jurisdictions in which we operate. Our U.S. tax returns have been audited for years through 2002 by the Internal Revenue Service. In other major jurisdictions, we are generally open to examination for the most recent three to five fiscal years. Although timing of the resolution and closure on audits is highly uncertain, we do not believe it is likely that the unrecognized tax benefits would materially change in the next 12 months.

In connection with the disposition of our hard-disk drive business, HDD, to Maxtor Corporation (“Maxtor”), we entered into a Tax Sharing and Indemnity Agreement with Maxtor, dated as of April 2, 2001 (the “Tax Sharing Agreement”) that, among other things, defined each company’s responsibility for taxes attributable to periods prior to April 2, 2001. Pursuant to a settlement agreement entered into between the companies dated as of December 23, 2004, Maxtor’s remaining tax indemnity liability under section 3(a) of the Tax Sharing Agreement was limited to $8.8 million.

As of March 31, ~~2011, $6.0 million remains as the indemnity liability. We believe that this amount is sufficient to cover any remaining potential tax liabilities under this section of the Tax Sharing Agreement.~~

~~As of March 31, 2011,~~2012, we had federal net operating loss and tax credit carryforwards of approximately ~~$187.7~~$202.7 million and ~~$158.5~~$156.9 million, respectively. Our federal net operating loss carryforwards include ~~$28.3~~$33.6 million attributable to excess tax deductions from stock option exercises, and are not included in the deferred tax assets shown above. The benefit of these loss carryforwards will be credited to equity when realized. The net operating loss and tax credit carryforwards expire in varying amounts beginning in fiscal ~~2012~~2013 if not previously utilized, the utilization of which is limited under the tax law ownership change provision. These carryforwards include ~~$10.1~~$10.8 million of acquired net operating losses and ~~$10.7~~$15.6 million of credits.

Certain changes in stock ownership could result in a limitation on the amount of net operating loss and tax credit carryovers that can be utilized each year. Should the company undergo such a change in stock ownership, it could severely limit the usage of these carryover tax attributes against future income, resulting in additional tax charges.

Due to our history of net losses and the difficulty in predicting future results, we believe that we cannot rely on projections of future taxable income to realize the deferred tax assets. Accordingly, we have established a full valuation allowance against our U.S. net deferred tax assets. Significant management judgment is required in determining our deferred tax assets and liabilities and valuation allowances for purposes of assessing our ability to realize any future benefit from our net deferred tax assets. We intend to maintain this valuation allowance until sufficient positive evidence exists to support the reversal of the valuation allowance. Our income tax expense recorded in the future will be reduced to the extent that sufficient positive evidence materializes to support a reversal of, or decrease in, our valuation allowance.

NOTE 12: NET INCOME (LOSS) PER SHARE

Equity Instruments Outstanding

We have granted stock options and restricted stock units under our Plans that, upon exercise and vesting, respectively, would increase shares outstanding. On November 15, 2010, we issued 3.50% convertible subordinated notes which are convertible at the option of the holders at any time prior to maturity into shares of Quantum common stock at a conversion price of $4.33 per share. These notes, if converted, would increase shares outstanding.

On June 3, 2009 we entered into an agreement with EMC Corporation (“EMC”) which provides for the issuance of certain warrants. On June 23, 2009, we issued a warrant to EMC to purchase 10 million shares of our common stock at a $0.38 per share exercise price. Only in the event of a change of control of Quantum will this warrant vest and be exercisable. It expires seven years from the date of issuance or three years after change of control, whichever occurs first. Due to these terms, no share-based compensation expense related to this warrant has been recorded to date.

In addition, under the June 3, 2009 agreement, as amended, we will grant additional warrants to EMC if certain DXi software revenue amounts are reached by specific dates. The necessary revenue amounts are not forecasted to be reached by specific dates to cause additional warrants to be earned. If additional warrants are earned, they are issuable to EMC within 30 days following August 31, 2011 with the same vesting and exercise conditions as the warrant issued June 23, 2009. In no event shall warrants be issued or exercisable to the extent that issuance or exercise would result in EMC holding, or being deemed to hold, more than 15% of our issued and outstanding capital stock. Upon exercise, warrants would increase shares outstanding.

At March 31, 2010, ~~and 2009,~~ we had outstanding 4.375% convertible subordinated notes which were convertible at the option of the holders at any time prior to maturity into shares of Quantum common stock at a conversion price of $4.35 per share.

Net Income (Loss) per Share

The following table set forth the computation of basic and diluted net income (loss) per share (in thousands, except per-share data):

      For the year ended March 31,
2011       2010       2009
Net income (loss) $ 4,541 $ 16,634 $ (358,264 )
       Interest on dilutive notes — 1,249 —
       Net gain on extinguishment of dilutive notes — (12,859 ) —
Income (loss) for purposes of computing income (loss) per diluted share $ 4,541 $ 5,024 $ (358,264 )
Weighted average shares and common share equivalents (“CSE”):
       Basic 220,888 212,672 209,041
              Dilutive CSE from stock plans 8,815 4,056 —
              Dilutive CSE from purchase plan 35 471 —
              Dilutive CSE from convertible notes — 6,562 —
       Diluted 229,738 223,761 209,041
Basic net income (loss) per share $ 0.02 $ 0.08 $ (1.71 )
Diluted net income (loss) per share $ 0.02 $ 0.02 $ (1.71 )

	For the year ended March 31,
	2012			2011		2010
Net income (loss)	$	(8,809	)	$	4,541	$	16,634
Interest on dilutive notes		—			—		1,249
Net gain on extinguishment of dilutive notes		—			—		(12,859	)
Income (loss) for purposes of computing income (loss) per diluted share	$	(8,809	)	$	4,541	$	5,024
Weighted average shares and common share equivalents (“CSE”):
Basic		232,599			220,888	212,672
Dilutive CSE from stock plans		—			8,815		4,056
Dilutive CSE from purchase plan		—			35		471
Dilutive CSE from convertible notes		—			—		6,562
Diluted		232,599			229,738	223,761
Basic net income (loss) per share	$	(0.04	)	$	0.02	$	0.08
Diluted net income (loss) per share	$	(0.04	)	$	0.02	$	0.02

The computations of diluted net income (loss) per share for the periods presented excluded the following because the effect would have been antidilutive:

For fiscal 2012 and 2011, ~~11.6 million weighted equivalent shares of the 3.50% convertible subordinated notes were excluded. For fiscal 2010 and 2009, 5.1~~31.2 million and ~~36.8~~11.6 million weighted equivalent shares, respectively, of the ~~4.375%~~ 3.50%convertible subordinated notes were excluded.
~~For fiscal 2011 and 2010, stock~~Stock options to purchase 11.5 million, 10.4 million and 18.8 million weighted average shares in fiscal 2012,2011 and 2010 respectively, were excluded. ~~Stock options to purchase 25.6 million shares were excluded for fiscal 2009.~~
Unvested restricted stock units of 5.1 million, 49,000 and 0.2 million weighted average shares for fiscal ~~2011~~2012,2011 and ~~2010,~~2012, respectively, were excluded. ~~Unvested restricted stock units of 6.3 million shares outstanding at March 31, 2009 were excluded.~~

NOTE 13: ~~LITIGATION~~

On October 9, 2007, we filed a lawsuit against Riverbed Technology, Inc. (“Riverbed”) in the U.S. District Court in the Northern District of California, alleging Riverbed’s prior and continuing infringement of a patent held by Quantum related to data deduplication technology. On November 13, 2007, Riverbed filed a countersuit against Quantum alleging our infringement of a data deduplication patent held by Riverbed. On September 30, 2008, Quantum and Riverbed settled their mutual patent infringement lawsuits that were pending. The settlement agreement included a mutual covenant not to sue related to the parties’ data deduplication patents and a one-time $11.0 million payment from Riverbed to Quantum. The mutual covenant not to sue provided for in the settlement agreement operates similarly to a cross license. This $11.0 million was based on prior sales of the parties’ data deduplication products. In addition, the parties agreed, for a period of three years, not to file any patent infringement lawsuits against the other party. The $11.0 million settlement was recorded in royalty revenue for the second quarter of fiscal 2009.

~~NOTE 14:~~ COMMITMENTS AND CONTINGENCIES

Lease Commitments

We lease certain facilities under non-cancelable lease ~~agreements. We~~agreements and also have equipment leases for various office equipment. Some of the leases have renewal options ranging from one to ten years and others contain escalation ~~clauses and provisions for maintenance, taxes or insurance.~~clauses. These leases are operating leases.

In February 2006, we leased a campus facility in Colorado Springs, Colorado, comprised of three buildings in three separate operating leases with initial terms of five, seven and 15 years. In August 2010, we negotiated lower lease rates and a five year extension on one of the buildings. The future minimum lease payment schedule below includes ~~$33.6~~$29.9 million for this Colorado Springs campus.

Rent expense was $12.7 million ~~$13.8 million~~in both fiscal 2012 and ~~$15.5~~2011 and $13.8 million for fiscal ~~2011, 2010 and 2009, respectively.~~2010. Sublease income was ~~$37,000,~~immaterial in fiscal 2012 and 2011 and was $0.7 ~~million and $1.3~~ million for fiscal ~~2011, 2010 and 2009, respectively.~~2010.

Future minimum lease payments ~~under operating leases~~ are as follows (in thousands):

      Lease Payments
For the year ending March 31,
       2012 $ 13,073
       2013 11,400
       2014 9,209
       2015 8,396
       2016 6,901
       Thereafter 22,499
$ 71,478

	Lease Payments
For the year ending March 31,
2013	$	12,285
2014		10,055
2015		9,095
2016		7,334
2017		5,190
Thereafter		18,411
	$	62,370

Commitments to Purchase Inventory

We use contract manufacturers for certain manufacturing functions. Under these arrangements, the contract manufacturer procures inventory to manufacture products based upon our forecast of customer demand. We are responsible for the financial impact on the contract manufacturer of any reduction or product mix shift in the forecast relative to materials that the contract manufacturer had already purchased under a prior forecast. Such a variance in forecasted demand could require a cash payment for finished goods in excess of current customer demand or for costs of excess or obsolete inventory. As of March 31, ~~2011~~2012 and ~~2010,~~2011, we had issued non-cancelable purchase commitments for ~~$33.8~~$34.3 million and ~~$40.3~~$33.8 million, respectively, to purchase finished goods from our contract manufacturers.

Legal Proceedings

On September 12, 2011, Compression Technology Solutions LLC (“CTS”) filed a patent infringement lawsuit against a group of companies, consisting of Quantum, CA., Inc., EMC Corporation, Hewlett-Packard Company, International Business Machines Corp., NetApp, Inc. and Quest Software, Inc., in the U.S. District Court in the Eastern District of Missouri, alleging that certain unspecified products of the defendants, characterized as “deduplication software systems,” and, in the case of Quantum, including Quantum’s “DXi Series Deduplication software,” fall within the scope of patent 5,414,650. CTS is seeking injunctive relief, as well as the recovery of monetary damages, including treble damages for willful infringement. We do not believe we infringe the CTS patent; we believe that the CTS patent is invalid, and we intend to defend ourselves vigorously. In April 2012, our motion to transfer venue was granted and the lawsuit was transferred to the U.S. District Court in the Northern District of California. Due to the inherent uncertainty of litigation, we cannot identify probable or estimable damages related to the lawsuit.

Indemnifications

We have certain financial guarantees, both express and implied, related to product liability and potential infringement of intellectual property. Other than certain product liabilities recorded as of March 31, 2012 and 2011, we did not record a liability associated with these guarantees, as we have little or no history of costs associated with such indemnification requirements. Contingent liabilities associated with product liability may be mitigated by insurance coverage that we maintain.

It is not possible to determine the maximum potential amount under these indemnification agreements due to the limited history of our indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by us under these agreements have not had a material impact on our operating results, financial position or cash flows.

NOTE ~~15:~~14: GEOGRAPHIC AND CUSTOMER INFORMATION

Revenue, attributed to regions based on the location of customers, and long-lived assets, comprised of property and equipment, by region were as follows (in thousands):

      For the year ended March 31,
2011       2010       2009
Revenue       Long-Lived
Assets Revenue       Long-Lived
Assets Revenue       Long-Lived
Assets
Americas $ 430,125 $ 23,596 $ 448,830 $ 22,522 $ 533,000 $ 25,787
Europe 179,519 787 188,367 1,099 218,157 1,610
Asia Pacific 62,626 597 44,230 907 57,815 1,156
$ 672,270 $ 24,980 $ 681,427 $ 24,528 $ 808,972 $ 28,553

	As of and for the year ended March 31,
	2012				2011				2010
	Revenue		Long-Lived Assets		Revenue		Long-Lived Assets		Revenue		Long-Lived Assets
Americas	$	411,517	$	23,738	$	430,125	$	23,596	$	448,830	$	22,522
Europe		177,661		1,030		179,519		787		188,367		1,099
Asia Pacific		63,192		672		62,626		597		44,230		907
	$	652,370	$	25,440	$	672,270	$	24,980	$	681,427	$	24,528

~~We had one~~

No customer ~~that~~ accounted for 10% or more of our revenue in ~~current~~fiscal 2012. Dell accounted for $68.7 million and ~~prior years (revenue~~10% of revenue in ~~millions):~~

      For the year ended March 31,
2011       2010       2009
Revenue       % of Revenue Revenue       % of Revenue Revenue       % of Revenue
Dell $ 68.7 10 % $ 86.5 13 % $ 116.6 14 %

fiscal 2011 and $86.5 million or 13% of revenue in fiscal 2010.

Following are revenues attributable to each of our product groups, services and royalties (in thousands):

For the year ended March 31,
2011 2010 2009
Disk systems and software solutions $ 110,678 $ 83,508 $ 87,574
Tape automation systems 254,153 263,977 317,907
Devices and non-royalty media 92,072 108,616 151,003
Service 151,095 156,477 164,664
Royalty 64,272 68,849 87,824
Total revenue $ 672,270 $ 681,427 $ 808,972

	For the year ended March 31,
	2012		2011		2010
Disk systems and software solutions	$	119,044	$	110,678	$	83,508
Tape automation systems		245,030		254,153		263,977
Devices and media		87,266		92,072		108,616
Service		144,364		151,095		156,477
Royalty		56,666		64,272		68,849
Total revenue	$	652,370	$	672,270	$	681,427

NOTE ~~16:~~15: UNAUDITED QUARTERLY FINANCIAL DATA

	For the year ended March 31, 2012
(In thousands, except per share data)	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
Revenue	$	153,535		$	165,039	$	173,492	$	160,304
Gross margin		63,262			71,611		73,717		65,245
Net income (loss)		(5,226	)		3,561		3,914		(11,058	)
Basic and diluted net income (loss) per share		(0.02	)		0.01		0.02		(0.05	)

	For the year ended March 31, 2011
	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
Revenue	$	163,225		$	167,722	$	176,226	$	165,097
Gross margin		67,454			71,396		75,570		68,562
Net income (loss)		(2,696	)		3,025		5,864		(1,652	)
Basic and diluted net income (loss) per share		(0.01	)		0.01		0.03		(0.01	)

      For the year ended March 31, 2011
(In thousands, except per share data) 1st
Quarter       2nd
Quarter       3rd
Quarter       4th
Quarter
Revenue $ 163,225 $ 167,722 $ 176,226 $ 165,097
Gross margin 67,454 71,396 75,570 68,562
Net income (loss) (2,696 ) 3,025 5,864 (1,652 )
Basic net income (loss) per share (0.01 ) 0.01 0.03 (0.01 )
Diluted net income (loss) per share (0.01 ) 0.01 0.03 (0.01 )

For the year ended March 31, 2010
1st
Quarter 2nd
Quarter 3rd
Quarter 4th
Quarter
Revenue $ 160,340 $ 174,926 $ 181,710 $ 164,451
Gross margin 61,643 76,629 74,716 67,049
Net income (loss) 5,008 11,355 4,636 (4,365 )
Basic net income (loss) per share 0.02 0.06 0.02 (0.02 )
Diluted net income (loss) per share (0.02 ) 0.04 0.02 (0.02 )

Net income for fiscal 2010 included a $12.9 million gain on debt extinguishment, net of costs, of which $11.3 million and $1.6 million were recorded in the first and second quarters of fiscal 2010, respectively.

~~NOTE 17: SUBSEQUENT EVENT~~

~~On June 13, 2011, we acquired Pancetera Software, Inc., a Delaware corporation (“Pancetera”) pursuant to a statutory merger in~~ ~~order to enhance our product offerings and technology portfolio in~~ exchange for approximately $12.0 million, comprised of $8.4 million in cash and $3.6 million in Quantum common stock. We acquired all outstanding shares of Pancetera and assumed all of Pancetera’s outstanding unvested stock options according to the option exchange ratio defined in the purchase agreement with Pancetera.

~~QUANTUM CORPORATION~~
SCHEDULE II

CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS

~~Allowance for doubtful accounts (in thousands):~~

      Balance at
beginning of
period Additions
(releases)
charged to
expense Deductions (i) Balance at end
of period
For the year ended:
       March 31, 2009 $ 5,746 $ 569 $ (4,316 ) $ 1,999
       March 31, 2010 1,999 (453 ) (748 ) 798
       March 31, 2011 798 (502 ) 107 403

Allowance for doubtful accounts (in thousands):
	Balance at beginning of period		Releases charged to expense			Deductions (i)			Balance at end of period
For the year ended:
March 31, 2010	$	1,999	$	(453	)	$	(748	)	$	798
March 31, 2011		798		(502	)		107			403
March 31, 2012		403		(125	)		(61	)		217

____________________

⁽ⁱ⁾Uncollectible accounts written off, net of recoveries.

~~ITEM 9.~~

~~CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE~~

~~None.~~

~~ITEM 9A. CONTROLS AND PROCEDURES~~

Attached as exhibits to this Annual Report on Form 10-K are certifications of our Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), which are required pursuant to Rule 13a-14 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). This “Controls and Procedures” section of this Annual Report on Form 10-K includes information concerning the controls and controls evaluation referenced in the certifications. This section of the Annual Report on Form 10-K should be read in conjunction with the certifications and the report of PricewaterhouseCoopers LLP as described below, for a more complete understanding of the matters presented.

~~Evaluation of Disclosure Controls and Procedures~~

We evaluated the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this Annual Report on Form 10-K. This control evaluation was performed under the supervision and with the participation of management, including our CEO and CFO. Disclosure controls and procedures are designed to ensure that information required to be disclosed in our reports filed under the Exchange Act, such as this Annual Report on Form 10-K is recorded, processed, summarized and reported within the time periods specified by the SEC. Disclosure controls are also designed to ensure that such information is accumulated and communicated to our management, including the CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.

~~Based on the controls evaluation, our CEO and CFO have concluded that as of the end of the period covered by this Annual Report on Form 10-K, our disclosure controls were effective.~~

~~Management Report on Internal Control over Financial Reporting~~

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Under the supervision and with the participation of our management, including our CEO and CFO, we conducted an evaluation of the effectiveness of our internal control over financial reporting as of March 31, 2011 based on the guidelines established in ~~Internal Control – Integrated Framework~~ issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on the results of our evaluation, our management concluded that our internal control over financial reporting was effective as of March 31, 2011 to provide reasonable assurance regarding the reliability of financial reporting and preparation of financial statements for external reporting purposes in accordance with generally accepted accounting principles.

PricewaterhouseCoopers LLP, our independent registered public accounting firm, has issued an attestation report regarding its assessment of the Company’s internal control over financial reporting as of March 31, 2011, as set forth at the beginning of Part II, Item 8 of this Annual Report on Form 10-K.

~~Limitations on Effectiveness of Controls~~

Our management, including our CEO and CFO, does not expect that our disclosure controls or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. Additional controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

~~Changes in Internal Controls over Financial Reporting~~
There was no change in our internal control over financial reporting during the fourth quarter of fiscal 2011 that has materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.
~~ITEM 9B. OTHER INFORMATION~~
~~None.~~
~~PART III~~
~~ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE~~
The information required by this item with respect to our directors, audit committee and audit committee financial expert is incorporated by reference to the information set forth in our proxy statement for the 2011 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of our fiscal year ended March 31, 2011. For information pertaining to our executive officers, refer to the “Executive Officers of Quantum Corporation” section of Part I, Item 1 of this Annual Report on Form 10-K.
We have adopted a code of ethics that applies to our principal executive officer and all members of our finance department, including the principal financial officer and principal accounting officer. This code of ethics is posted on our website. The Internet address for our website is: http://www.quantum.com, and the code of ethics may be found by clicking “About Us” from the home page and then choosing “Corporate Governance.” Copies of the code are available free upon request by a stockholder.
We intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding an amendment to, or waiver from, a provision of this code of ethics by posting such information on our website, at the address and location specified above.
We have adopted Corporate Governance Principles, which are available on our website at http://www.quantum.com, where they may be found by clicking “About Us” from the home page and then choosing “Corporate Governance.” Copies of our Corporate Governance Principles are available free upon request by a stockholder. The charters of our Audit Committee, Leadership and Compensation Committee and Corporate Governance and Nominating Committee are also available on our website at http://www.quantum.com, where they may be found by clicking “About Us” from the home page and then choosing “Corporate Governance.” Copies of these committee charters are available free upon request by a stockholder.
~~ITEM 11. EXECUTIVE COMPENSATION~~
The information required by this item is incorporated by reference to the information set forth in our proxy statement for the 2011 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of our fiscal year ended March 31, 2011.
81

~~ITEM 12.~~ ~~SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS~~

~~The following discloses our equity compensation plan information (securities in thousands):~~
      Year ended March 31, 2011

(a)
Number of
securities to be
issued upon
exercise of
outstanding stock
options, warrants
and rights

Weighted-
average
exercise price
of outstanding
stock options,
warrants and
rights       Number of
securities
remaining
available
for future
issuance under
equity
compensation plans
(excluding shares
reflected in column
(a))
Equity compensation plans approved by stockholders (1) 26,549 $ 1.76 12,246
Equity compensation plans not approved by stockholders (2), (3) 2,171 $ 3.55 —
28,720 $ 1.89 12,246

~~____________________~~

~~(1)~~ Included in the stockholder approved plans are 6.6 million restricted stock units with a zero purchase price. The weighted average exercise price of outstanding stock options for stockholder approved plans is $2.34.
~~(2)~~ The Supplemental Stock Option Plan (“SSOP”) was terminated April 1, 2003, from which time no new stock options or stock purchase rights will be granted. Outstanding stock options granted under the SSOP prior to April 1, 2003, remain outstanding and continue to be governed by the terms and conditions of the SSOP.
~~(3)~~ Advanced Digital Information Corporation’s 1999 Stock Incentive Compensation Plan was assumed by Quantum on August 22, 2006 according to the terms detailed in the Agreement and Plan of Merger dated May 2, 2006 (“Merger Agreement”). Such outstanding stock options granted under this plan continue to be governed by the terms and conditions of the respective plan; however, the number of stock options and exercise prices of the outstanding stock options were changed in accordance with the formula in the Merger Agreement for the right to purchase Quantum common stock.
~~We also have an employee stock purchase plan with 5.9 million shares available for issuance that has been approved by stockholders.~~
The remaining information required by this item is incorporated by reference to the information set forth in our proxy statement for the 2011 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of our fiscal year ended March 31, 2011.
~~ITEM 13.~~ ~~CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE~~

The information required by this item is incorporated by reference to the information set forth in our proxy statement for the 2011 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of our fiscal year ended March 31, 2011.
~~ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES~~
The information required by this item is incorporated by reference to the information set forth in our proxy statement for the 2011 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of our fiscal year ended March 31, 2011.
82

PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

Upon written request, we will provide, without charge, a copy of our Annual Report on Form 10-K, including the Consolidated Financial Statements, financial statement schedules and any exhibits for our most recent fiscal year. All requests should be sent to:

Investor Relations

Quantum Corporation
~~Corporation~~

1650 Technology Drive, Suite 800

San Jose, California 95110
(408) 944-4450

~~(a) The following documents are filed as a part of this Report:~~

	1.(a) The following documents are filed as a part of this Report:

	1.		Financial Statements—Our Consolidated Financial Statements are listed in the Index to Consolidated Financial Statements.

	2.		Financial Statement Schedules —Our consolidated valuation and qualifying accounts (Schedule II) financial statement schedule is listed in the Index to Consolidated Financial Statements. All other schedules have been omitted because the information required to be set forth therein is not applicable or is shown in the Consolidated Financial Statements or the notes hereto.

	(b)Exhibits

~~(b)~~ ~~Exhibits~~

			Incorporated by Reference
Exhibit Number		Exhibit Description	Form	File No.	Exhibit(s)	Filing Date
	2.1	Agreement and Plan of Merger by and between Registrant, Pancetera Software, Inc., Quarry Acquisition Corporation and Henrik Rosendahl as the stockholder representative, dated June 13, 2011.	10-Q	001-13449	10.8	August 9, 2011
	3.1	Amended and Restated Certificate of Incorporation of Registrant.	8-K	001-13449	3.1	August 16, 2007
	3.2	Amended and Restated By-laws of Registrant, as amended.	8-K	001-13449	3.1	December 5, 2008
	3.3	Certificate of Designation of Rights, Preferences and Privileges of Series B Junior Participating Preferred Stock.	S-3	333-109587	4.7	October 9, 2003
	3.4	Certification of Amendment to the Bylaws of Quantum Corporation, as adopted on January 20, 2010.	8-K	001-13449	3.1	January 26, 2010
	4.1	Stockholder Agreement, dated as of October 28, 2002, by and between Registrant and Private Capital Management.	10-Q	001-13449	4.2	November 13, 2002
	4.2	Indenture for 3.50% Convertible Senior Subordinated Notes due 2015, between the Registrant and U.S. Bank National Association, as trustee, dated November 15, 2010, including the form of 3.50% Convertible Senior Subordinated Note due 2015.	8-K	001-13449	4.1	November 15, 2010
	10.1	Form of Indemnification Agreement between Registrant and the Named Executive Officers and Directors. *	8-K	001-13449	10.4	April 4, 2007
	10.2	Chief Executive Change of Control Agreement between Registrant and Jon W. Gacek.*	8-K	001-13449	10.3	April 5, 2011
	10.3	Executive Chairman Change of Control Agreement between Registrant and Richard E. Belluzzo.*	8-K	001-13449	10.4	April 5, 2011
	10.4	Form of Officer Change of Control Agreement between Registrant and each of Registrant’s Executive Officers (Other than the Executive Chairman and the CEO).*	8-K	001-13449	10.5	April 5, 2011
	10.5	Form of Amended and Restated Director Change of Control Agreement between Registrant and the Directors (Other than the Executive Chairman and the CEO).*	8-K	001-13449	10.2	May 10, 2011
	10.6	Amended and Restated 1993 Long-Term Incentive Plan effective November 10, 2007. *	8-K	001-13449	10.1	November 15, 2007
	10.7	Form of Restricted Stock Unit Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-Q	001-13449	10.3	November 7, 2008
	10.8	Form of Restricted Stock Unit Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-Q	001-13449	10.4	November 7, 2008
	10.9	Form of Stock Option Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-K	001-13449	10.9	June 14, 2011
	10.10	Form of Stock Option Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-K	001-13449	10.10	June 14, 2011
	10.11	Form of Stock Option Agreement. For Chief Executive Officer under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-K	001-13449	10.11	June 14, 2011
	10.12	Amended and Restated Nonemployee Director Equity Incentive Plan effective November 10, 2007. *	8-K	001-13449	10.2	November 15, 2007
	10.13	Form of Stock Option Agreement under the Amended and Restated Nonemployee Director Equity Incentive Plan, effective November 10, 2007. *	10-K	001-13449	10.13	June 14, 2011

            Incorporated by Reference
Exhibit
Number Exhibit Description Form       File No.       Exhibit(s)       Filing Date
     3.1      Amended and Restated Certificate of Incorporation of Registrant. 8-K 001-13449 3.1 August 16, 2007
3.2 Amended and Restated By-laws of Registrant, as amended. 8-K 001-13449 3.1 December 5, 2008
3.3 Certificate of Designation of Rights, Preferences and Privileges of Series B Junior Participating Preferred Stock. S-3 333-109587 4.7 October 9, 2003
3.4 Certificate of Amendment to the Bylaws of Quantum Corporation, as adopted on January 20, 2010. 8-K 001-13449 3.1 January 26, 2010
4.1 Stockholder Agreement, dated as of October 28, 2002, by and between Registrant and Private Capital Management. 10-Q 001-13449 4.2 November 13, 2002
4.2 Indenture for 3.50% Convertible Senior Subordinated Notes due 2015, between the Registrant and U.S. Bank National Association, as trustee, dated November 15, 2010, including the form of 3.50% Convertible Senior Subordinated Note due 2015. 8-K 001-13449 4.1 November 15, 2010
10.1 Form of Indemnification Agreement between Registrant and the Named Executive Officers and Directors. * 8-K 001-13449 10.4 April 4, 2007
10.2 Chief Executive Change of Control Agreement between Registrant and Jon W. Gacek.* 8-K 001-13449 10.3 April 5, 2011
10.3 Executive Chairman Change of Control Agreement between Registrant and Richard E. Belluzzo.* 8-K 001-13449 10.4 April 5, 2011
10.4 Form of Officer Change of Control Agreement between Registrant and each of Registrant’s Executive Officers (Other than the Executive Chairman and the CEO).* 8-K 001-13449 10.5 April 5, 2011
10.5 Form of Amended and Restated Director Change of Control Agreement between Registrant and the Directors (Other than the Executive Chairman and the CEO).* 8-K 001-13449 10.2 May 10, 2011
10.6 Amended and Restated 1993 Long-Term Incentive Plan effective November 10, 2007. * 8-K 001-13449 10.1 November 15, 2007
10.7 Form of Restricted Stock Unit Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. * 10-Q 001-13449 10.3 November 7, 2008
10.8 Form of Restricted Stock Unit Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. * 10-Q 001-13449 10.4 November 7, 2008
10.9 Form of Stock Option Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
10.10 Form of Stock Option Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
10.11 Form of Stock Option Agreement. For Chief Executive Officer under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
10.12 Amended and Restated Nonemployee Director Equity Incentive Plan effective November 10, 2007. * 8-K 001-13449 10.2 November 15, 2007

			Incorporated by Reference
Exhibit Number		Exhibit Description	Form	File No.	Exhibit(s)	Filing Date
	10.14	Form of Restricted Stock Unit Agreement under the Amended and Restated Nonemployee Director Equity Incentive Plan, effective November 10, 2007. *	10-Q	001-13449	10.2	November 7, 2008
	10.15	Advanced Digital Information Corporation Amended and Restated 1999 Stock Incentive Compensation Plan. *	S-8	001-13449	4.4	August 25, 2006
	10.16	Employment Offer Letter, dated March 31, 2011, between Registrant and Jon W. Gacek.*	8-K	001-13449	10.1	April 5, 2011
	10.17	Offer Letter, dated March 31, 2011, between Registrant and Richard E. Belluzzo.*	8-K	001-13449	10.2	April 5, 2011
	10.18	Employment Offer Letter, dated August 31, 2006, between Registrant and William C. Britts. *	8-K	001-13449	10.1	September 7, 2006
	10.19	Amendment to Employment Offer Letter between Registrant and William C. Britts. *	10-Q	001-13449	10.6	November 7, 2008
	10.20	Amendment to Employment Offer Letter between Registrant and William C. Britts.*	10-Q	001-13449	10.3	February 5, 2010
	10.21	Offer Letter, dated May 25, 2007, between Registrant and Joseph A. Marengi. *	8-K	001-13449	10.1	May 25, 2007
	10.22	Credit Agreement, dated March 29, 2012, by and among the Registrant, Wells Fargo Capital Finance, LLC, as Administrative Agent, and the Lenders party thereto. ‡
	10.23	Security Agreement, dated March 29, 2012, among the Registrant and Wells Fargo Capital Finance, LLC.	8-K	001-13449	10.2	April 2, 2012
	10.24	Offer Letter of Mr. David A. Krall, dated August 11, 2011.*	8-K	001-13449	10.1	August 22, 2011
	10.25	Offer Letter, dated May 2, 2011, between Registrant and David E. Roberson. *	8-K	001-13449	10.1	May 10, 2011
	10.26	Agreement for Purchase and Sale of Real Property, dated as November 18, 2005, among Registrant, SELCO Service Corporation and CS/Federal Drive LLC, as amended by Amendments 1 through 6.	8-K	001-13449	10.1	February 10, 2006
	10.27	Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building A).	8-K	001-13449	10.2	February 10, 2006
	10.28	Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building B).	8-K	001-13449	10.3	February 10, 2006
	10.29	Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building C).	8-K	001-13449	10.4	February 10, 2006
	10.30	Patent Cross License Agreement, dated February 27, 2006, between Registrant and Storage Technology Corporation.	8-K	001-13449	10.1	March 3, 2006
	10.31	Tax Sharing and Indemnity Agreement by and among Registrant, Maxtor Corporation and Insula Corporation, dated April 2, 2001.	8-K	001-13449	10.1	December 29, 2004
	10.32	Mutual General Release and Global Settlement Agreement, dated as of December 23, 2004, between Maxtor Corporation and Registrant.	10-Q	001-13449	10.4	February 2, 2005
	10.33	Offer Letter, dated August 20, 2007, between Registrant and Paul Auvil. *	8-K	001-13449	10.1	August 29, 2007
	10.34	Warrant Purchase Agreement, dated as of June 3, 2009, by and between Quantum Corporation and EMC Corporation.	8-K	001-13449	10.1	June 9, 2009
	10.35	First Amendment to the Purchase Agreement, dated as of June 17, 2009, by and between Quantum Corporation and EMC Corporation.	8-K	001-13449	10.1	June 23, 2009
	10.36	Amended and Restated Employee Stock Purchase Plan, dated January 1, 2010.*	8-K	001-13449	10.1	January 6, 2010

      Incorporated by Reference
Exhibit
Number Exhibit Description       Form       File No.       Exhibit(s)       Filing Date
     10.13      Form of Stock Option Agreement under the Amended and Restated Nonemployee Director Equity Incentive Plan, effective November 10, 2007. *‡
10.14 Form of Restricted Stock Unit Agreement under the Amended and Restated Nonemployee Director Equity Incentive Plan, effective November 10, 2007. * 10-Q 001-13449 10.2 November 7, 2008
10.15 Advanced Digital Information Corporation Amended and Restated 1999 Stock Incentive Compensation Plan. * S-8 001-13449 4.4 August 25, 2006
10.16 Employment Offer Letter, dated March 31, 2011, between Registrant and Jon W. Gacek.* 8-K 001-13449 10.1 April 5, 2011
10.17 Offer Letter, dated March 31, 2011, between Registrant and Richard E. Belluzzo.* 8-K 001-13449 10.2 April 5, 2011
10.18 Employment Offer Letter, dated August 31, 2006, between Registrant and William C. Britts. * 8-K 001-13449 10.1 September 7, 2006
10.19 Amendment to Employment Offer Letter between Registrant and William C. Britts. * 10-Q 001-13449 10.6 November 7, 2008
10.20 Amendment to Employment Offer Letter between Registrant and William C. Britts.* 10-Q 001-13449 10.3 February 5, 2010
10.21 Offer Letter, dated May 25, 2007, between Registrant and Joseph A. Marengi. * 8-K 001-13449 10.1 May 25, 2007
10.22 Termination Agreement and General Release of all Claims, dated July 21, 2010, between Registrant and Gerald G. Lopatin. * 8-K 001-13449 10.1 July 23, 2010
10.23 Senior Secured Credit Agreement, dated July 12, 2007, by and among the Registrant, Credit Suisse, as Collateral Agent, Administrative Agent, Swing Line Lender and an L/C Issuer, and the other Lenders party thereto. 10-Q 001-13449 10.8 August 9, 2007
10.24 Security Agreement, dated July 12, 2007, among the Registrant and the other Grantors referred to therein. 10-Q 001-13449 10.9 August 9, 2007
10.25 Amendment No. 1, dated as of April 15, 2009, to Senior Secured Credit Agreement, dated July 12, 2007, by and among the Registrant, Credit Suisse, as Administrative Agent, and the Lenders thereto. 8-K 001-13449 10.1 April 16, 2009
10.26 Amendment No. 2, dated as of October 26, 2010 to Senior Secured Credit Agreement dated July 12, 2007, by and among the Registrant, Credit Suisse, as Administrative Agent, and the Lenders thereto. 8-K 001-13449 10.1 October 26, 2010
10.27 Offer Letter of Mr. Bruce A. Pasternack, dated July 12, 2007. * 8-K 001-13449 10.1 July 18, 2007
10.28 Offer Letter of Mr. Dennis P. Wolf, dated July 12, 2007. * 8-K 001-13449 10.2 July 18, 2007
10.29 Offer Letter, dated May 2, 2011, between Registrant and David E. Roberson. * 8-K 001-13449 10.1 May 10, 2011
10.30 Agreement for Purchase and Sale of Real Property, dated as November 18, 2005, among Registrant, SELCO Service Corporation and CS/Federal Drive LLC, as amended by Amendments 1 through 6. 8-K 001-13449 10.1 February 10, 2006
10.31 Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building A). 8-K 001-13449 10.2 February 10, 2006
10.32 Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building B). 8-K 001-13449 10.3 February 10, 2006

Incorporated by Reference

Exhibit
Number

Exhibit Description

Form

File No.

Exhibit(s)

Filing Date

12.1

Ratio of Earnings to Fixed Charges.

10-K

001-13449

12.1

June 14, 2012

Quantum Subsidiaries.

10-K

001-13449

June 14, 2012

Consent of Independent Registered Public Accounting Firm, PricewaterhouseCoopers LLP. ‡

Power of Attorney (see signature page).

31.1

Certification of the Chief Executive Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002. ‡

31.2

Certification of the Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002. ‡

32.1

Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002. †

32.2

Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002. †

101.INS

XBRL Instance Document.

10-K

001-13449

101.INS

June 14, 2012

101.SCH

XBRL Taxonomy Extension Schema Document.

10-K

001-13449

101.SCH

June 14, 2012

101.CAL

XBRL Taxonomy Extension Calculation Linkbase Document.

10-K

001-13449

101.CAL

June 14, 2012

101.DEF

XBRL Taxonomy Extension Definition Linkbase Document.

10-K

001-13449

101.DEF

June 14, 2012

101.LAB

XBRL Taxonomy Extension Label Linkbase Document.

10-K

001-13449

101.LAB

June 14, 2012

101.PRE

XBRL Taxonomy Extension Presentation Linkbase Document.

10-K

001-13449

101.PRE

June 14, 2012

Incorporated by Reference
Exhibit
Number Exhibit Description Form File No. Exhibit(s) Filing Date
10.33 Lease Agreement, dated February 6, 2006, between Registrant and CS/Federal Drive AB LLC (for Building C). 8-K 001-13449 10.4 February 10, 2006
10.34 Patent Cross License Agreement, dated February 27, 2006, between Registrant and Storage Technology Corporation. 8-K 001-13449 10.1 March 3, 2006
10.35 Tax Sharing and Indemnity Agreement by and among Registrant, Maxtor Corporation and Insula Corporation, dated April 2, 2001. 8-K 001-13449 10.1 December 29, 2004
10.36 Mutual General Release and Global Settlement Agreement, dated as of December 23, 2004, between Maxtor Corporation and Registrant. 10-Q 001-13449 10.4 February 2, 2005
10.37 Offer Letter, dated August 20, 2007, between Registrant and Paul Auvil. * 8-K 001-13449 10.1 August 29, 2007
10.38 Warrant Purchase Agreement, dated as of June 3, 2009, by and between Quantum Corporation and EMC Corporation. 8-K 001-13449 10.1 June 9, 2009
10.39 First Amendment to the Purchase Agreement, dated as of June 17, 2009, by and between Quantum Corporation and EMC Corporation. 8-K 001-13449 10.1 June 23, 2009
10.40 Amended and Restated Employee Stock Purchase Plan, dated January 1, 2010. * 8-K 001-13449 10.1 January 6, 2010
12.1 Ratio of Earnings to Fixed Charges. ‡
21 Quantum Subsidiaries. ‡
23 Consent of Independent Registered Public Accounting Firm, PricewaterhouseCoopers LLP. ‡
24 Power of Attorney (see signature page).
31.1 Certification of the Chief Executive Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002. ‡
31.2 Certification of the Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002. ‡
32.1 Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002. †
32.2 Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002. †

*		Indicates management contract or compensatory plan, contract or arrangement.
‡		Filed herewith.
†		Furnished herewith.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

QUANTUM CORPORATION

/s/ LINDA M. BREARD

Linda M. Breard

Chief Financial Officer

(Principal Financial and Chief Accounting Officer)

Dated: ~~June 14, 2011~~

March 8, 2013

~~POWER OF ATTORNEY~~

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jon W. Gacek and Linda M. Breard, jointly and severally, his or her attorneys-in-fact, each with the power of substitution, for him or her in any and all capacities, to sign any amendments to this Annual Report on Form 10-K, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his or her substitute or substitutes, may do or cause to be done by virtue hereof.

~~Pursuant to the requirements of the Securities Exchange Act of 1934, this Report has been signed below by the following persons in the capacities and on June 14, 2011.~~

~~Signature~~			~~Title~~
~~/s/ JON W. GACEK~~			~~Director, Chief Executive Officer~~
~~Jon W. Gacek~~			~~(Principal Executive Officer)~~

~~/s/ LINDA M. BREARD~~			~~Chief Financial Officer~~
~~Linda M. Breard~~			~~(Principal Financial and Chief Accounting Officer)~~

~~/s/ PAUL R. AUVIL III~~			~~Director~~
~~Paul R. Auvil III~~

~~/s/ RICHARD E. BELLUZZO~~			~~Director~~
~~Richard E. Belluzzo~~

~~/s/ MICHAEL A. BROWN~~			~~Director~~
~~Michael A. Brown~~

~~/s/ THOMAS S. BUCHSBAUM~~			~~Director~~
~~Thomas S. Buchsbaum~~

~~/s/ EDWARD M. ESBER, JR.~~			~~Director~~
~~Edward M. Esber, Jr~~

~~/s/ ELIZABETH A. FETTER~~			~~Director~~
~~Elizabeth A. Fetter~~

~~/s/ JOSEPH A. MARENGI~~			~~Director~~
~~Joseph A. Marengi~~

~~/s/ DAVID E. ROBERSON~~			~~Director~~
~~David E. Roberson~~

~~/s/ DENNIS P. WOLF~~			~~Director~~
~~Dennis P. Wolf~~

x		ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
		For the fiscal year ended March 31, ~~2011~~2012
		OR
¨		TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Delaware	94-2665054
(State or ~~Other Jurisdiction~~other jurisdiction of ~~Incorporation~~incorporation or ~~Organization)~~organization)	(I.R.S. Employer Identification No.)

1650 Technology Drive, Suite 800, San Jose, California	95110
(Address of ~~Principal Executive Offices)~~principal executive offices)	(Zip Code)

Title of each class		Name of each exchange on which registered
QUANTUM CORPORATION COMMON STOCK		NEW YORK STOCK EXCHANGE

		~~Page~~ ~~Number~~
~~PART I~~
~~Item 1~~	~~Business~~	1
~~Item 1A~~	~~Risk Factors~~	10
~~Item 1B~~	~~Unresolved Staff Comments~~	22
~~Item 2~~	~~Properties~~	22
~~Item 3~~	~~Legal Proceedings~~	22
~~Item 4~~	~~Reserved~~	22
~~PART II~~
~~Item 5~~	~~Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities~~	23
~~Item 6~~	~~Selected Financial Data~~	24
~~Item 7~~	~~Management’s Discussion and Analysis of Financial Condition and Results of Operations~~	25
~~Item 7A~~	~~Quantitative and Qualitative Disclosures About Market Risk~~	44
~~Item 8~~	~~Financial Statements and Supplementary Data~~	45
~~Item 9~~	~~Changes in and Disagreements with Accountants on Accounting and Financial Disclosure~~	80
~~Item 9A~~	~~Controls and Procedures~~	80
~~Item 9B~~	~~Other Information~~	81
~~PART III~~
~~Item 10~~	~~Directors, Executive Officers and Corporate Governance~~	81
~~Item 11~~	~~Executive Compensation~~	81
~~Item 12~~	~~Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters~~	82
~~Item 13~~	~~Certain Relationships and Related Transactions, and Director Independence~~	82
~~Item 14~~	~~Principal Accounting Fees and Services~~	82
~~PART IV~~
~~Item 15~~	~~Exhibits, Financial Statement Schedules~~	83
~~SIGNATURE~~		87
~~POWER OF ATTORNEY~~		88

~~Name~~		~~Position with Quantum~~
~~Linda M. Breard~~		~~Chief Financial Officer~~
~~William C. Britts~~		~~Executive Vice President, Sales, Marketing and Service~~
~~Robert S. Clark~~		~~Senior Vice President, Disk and Tape Backup Product Group~~
~~Jon W. Gacek~~		~~Chief Executive Officer~~
~~Shawn D. Hall~~		~~Senior Vice President, General Counsel and Secretary~~
~~Janae S. Lee~~		~~Senior Vice President, File System and Archive Products~~

~~Location~~		~~Function~~
~~North America~~
~~San Jose, CA~~		~~Corporate headquarters, sales, research and development~~
~~Irvine, CA~~		~~Administration, sales, service, research and development~~
~~Colorado Springs, CO~~		~~Operations, service, research and development, sales, administration~~
~~Boulder, CO~~		~~Research and development~~
~~Englewood, CO~~		~~Research and development, service, sales, operations~~
~~Mendota Heights, MN~~		~~Research and development~~
~~Richardson, TX~~		~~Research and development~~
~~Bellevue, WA~~		~~Sales and administration~~
~~Other North America~~		~~Sales, research and development~~

~~Europe~~
~~Paris, France~~		~~Sales~~
~~Munich, Germany~~		~~Sales and service~~
~~Zurich, Switzerland~~		~~Operations and administration~~
~~Bracknell, UK~~		~~Sales and service~~
~~Northampton, UK~~		~~Sales and service~~
~~Other Europe~~		~~Sales, service and administration~~

~~Asia Pacific~~
~~Adelaide, Australia~~		~~Research and development~~
~~Brisbane, Australia~~		~~Sales and administration~~
~~Shanghai, China~~		~~Sales~~
~~Tokyo, Japan~~		~~Sales and media procurement~~
~~Kuala Lumpur, Malaysia~~		~~Administration and customer service~~
~~Singapore City, Singapore~~		~~Sales and distribution~~
~~Other Asia Pacific~~		~~Sales~~

Fiscal 2011	High		Low
First quarter ended June 30, 2010	$	2.98	$	1.85
Second quarter ended September 30, 2010		2.15		1.11
Third quarter ended December 31, 2010		4.00		1.89
Fourth quarter ended March 31, 2011		4.45		2.19

Fiscal 2010	High		Low
First quarter ended June 30, 2009	$	1.50	$	0.66
Second quarter ended September 30, 2009		1.30		0.79
Third quarter ended December 31, 2009		3.15		1.15
Fourth quarter ended March 31, 2010		3.18		2.18

	For the year ended March 31,
(In thousands, except per share data)	2011		2010		2009			2008			2007
Statement of Operations Data:
Total revenue	$	672,270	$	681,427	$	808,972		$	975,702		$	1,016,174
Total cost of revenue		389,288		401,390		504,658			656,598			722,789
Gross margin		282,982		280,037		304,314			319,104			293,385
Income (loss) from operations		24,704		29,309		(329,925	)		(8,097	)		(27,154	)
Net income (loss)		4,541		16,634		(358,264	)		(60,234	)		(64,094	)
Basic net income (loss) per share		0.02		0.08		(1.71	)		(0.30	)		(0.33	)
Diluted net income (loss) per share		0.02		0.02		(1.71	)		(0.30	)		(0.33	)

	As of March 31,
	2011		2010		2009			2008			2007
Balance Sheet Data:
Total assets	$	430,965	$	504,143	$	549,369		$	1,065,725		$	1,125,829
Short-term debt		1,067		23,983		4,000			4,000			25,000
Long-term debt		238,267		305,899		404,000			496,000			497,500

	For the year ended March 31,												Change
(dollars in thousands)	2011				2010				2009				2011 vs. 2010					2010 vs. 2009
			% of revenue				% of revenue				% of revenue
Product revenue	$	456,903	68.0	%	$	456,101	66.9	%	$	556,484	68.8	%	$	802		0.2	%	$	(100,383	)	(18.0	)%
Service revenue		151,095	22.5	%		156,477	23.0	%		164,664	20.4	%		(5,382	)	(3.4	)%		(8,187	)	(5.0	)%
Royalty revenue		64,272	9.5	%		68,849	10.1	%		87,824	10.8	%		(4,577	)	(6.6	)%		(18,975	)	(21.6	)%
Total revenue	$	672,270	100.0	%	$	681,427	100.0	%	$	808,972	100.0	%	$	(9,157	)	(1.3	)%	$	(127,545	)	(15.8	)%

	As of or for the year ended March 31,
(In thousands)	2011			2010			2009
Cash and cash equivalents	$	76,010		$	114,947		$	85,532
Net income (loss)		4,541			16,634			(358,264	)
Net cash provided by operating activities		52,327			100,164			89,100
Net cash used in investing activities		(10,103	)		(8,541	)		(4,680	)
Net cash used in financing activities		(81,286	)		(62,398	)		(90,041	)

~~(ii)~~		~~Unwillingness on the part of the group lenders that provide our CS credit agreement to do any of the following:~~

		~~Provide a waiver or amendment for any covenant violations we may experience in future periods, thereby triggering a default under, or termination of, the revolving credit line and term loan, or~~ ~~Approve any other amendments to the CS credit agreement we may seek to obtain in the future.~~ Any lack of renewal, waiver, or amendment, if needed, could result in the revolving credit line and CS term loan becoming unavailable to us and any amounts outstanding becoming immediately due and payable. In the case of our borrowings at March 31, 2011, this would mean $104.3 million could become immediately payable.

~~(iii)~~		Further impairment of our financial flexibility, which could require us to raise additional funding in the capital markets sooner than we otherwise would, and on terms less favorable to us, if available at all.

	Payments Due by Period
	Less than 1 year		1 – 3 years		3 –5 years		More than 5 years		Total
Convertible subordinated debt	$	4,725	$	9,450	$	144,450	$	—	$	158,625
Long-term debt, including current portion		5,039		9,957		102,255		—		117,251
Purchase obligations		33,787		—		—		—		33,787
Operating leases		13,073		20,609		15,297		22,499		71,478
Total contractual cash obligations	$	56,624	$	40,016	$	262,002	$	22,499	$	381,141

	Hypothetical 100 basis point increase in interest rates					Hypothetical 100 basis point decrease in interest rates
	2011		2010			2011			2010
Interest expense increase (decrease) on CS term debt	$	430	$	1,948		$	(430	)	$	(1,948	)
Interest expense increase (decrease) from collar		—		(774	)		—			450
Net interest expense increase (decrease)	$	430	$	1,174		$	(430	)	$	(1,498	)

	March 31, 2011			March 31, 2010
Assets
Current assets:
Cash and cash equivalents	$	76,010		$	114,947
Restricted cash		1,863			1,896
Accounts receivable, net of allowance for doubtful accounts of $403 and $798, respectively		114,969			103,397
Manufacturing inventories		48,131			54,080
Service parts inventories		45,036			53,217
Deferred income taxes		6,271			7,907
Other current assets		11,274			14,500
Total current assets		303,554			349,944
Long-term assets:
Property and equipment, less accumulated depreciation		24,980			24,528
Intangible assets, less accumulated amortization		44,711			73,092
Goodwill		46,770			46,770
Other long-term assets		10,950			9,809
Total long-term assets		127,411			154,199
	$	430,965		$	504,143

Liabilities and Stockholders’ Deficit
Current liabilities:
Accounts payable	$	52,203		$	56,688
Accrued warranty		7,034			5,884
Deferred revenue, current		87,488			94,921
Current portion of long-term debt		1,067			1,884
Current portion of convertible subordinated debt		—			22,099
Accrued restructuring charges		4,028			3,795
Accrued compensation		31,249			31,237
Income taxes payable		1,172			2,594
Other accrued liabilities		21,418			23,555
Total current liabilities		205,659			242,657
Long-term liabilities:
Deferred revenue, long-term		34,281			30,724
Deferred income taxes		6,820			8,676
Long-term debt		103,267			305,899
Convertible subordinated debt		135,000			—
Other long-term liabilities		7,049			7,444
Total long-term liabilities		286,417			352,743
Commitments and contingencies
Stockholders’ deficit:
Preferred stock:
Preferred stock, 20,000 shares authorized; no shares issued as of March 31, 2011 and
March 31, 2010		—			—
Common stock:
Common stock, $0.01 par value; 1,000,000 shares authorized; 227,311 and 214,946
shares issued and outstanding as of March 31, 2011 and 2010, respectively		2,273			2,149
Capital in excess of par value		385,911			361,374
Accumulated deficit		(456,588	)		(461,129	)
Accumulated other comprehensive income		7,293			6,349
Stockholders’ deficit		(61,111	)		(91,257	)
	$	430,965		$	504,143

										Accumulated
	Common Stock			Capital						Other
	Common Stock			in Excess of			Retained			Comprehensive
	Shares	Amount		Par Value			Deficit			Income			Total
Balances as of March 31, 2008	206,927	$	2,069	$	337,332		$	(119,499	)	$	8,102		$	228,004
Comprehensive loss:
Net loss	—		—		—			(358,264	)		—			(358,264	)
Other comprehensive loss:
Foreign currency translation adjustments	—		—		—			—			(2,850	)		(2,850	)
Net unrealized gain on revaluation of long-term
intercompany balance, net of tax of $160	—		—		—			—			600			600
Comprehensive loss														(360,514	)
Shares issued under employee stock purchase plan	1,938		19		2,633			—			—			2,652
Shares issued under employee stock incentive
plans, net	1,366		14		(707	)		—			—			(693	)
Share-based compensation expense	—		—		10,592			—			—			10,592
Balances as of March 31, 2009	210,231		2,102		349,850			(477,763	)		5,852			(119,959	)
Comprehensive income:
Net income	—		—		—			16,634			—			16,634
Other comprehensive income:
Foreign currency translation adjustments	—		—		—			—			459			459
Net unrealized gain on revaluation of long-term
intercompany balance, net of tax of $10	—		—		—			—			38			38
Comprehensive income														17,131
Shares issued under employee stock incentive
plans, net	4,715		47		1,735			—			—			1,782
Share-based compensation expense	—		—		9,789			—			—			9,789
Balances as of March 31, 2010	214,946		2,149		361,374			(461,129	)		6,349			(91,257	)
Comprehensive income:
Net income	—		—		—			4,541			—			4,541
Other comprehensive income:
Foreign currency translation adjustments	—		—		—			—			1,083			1,083
Net unrealized loss on revaluation of long-term
intercompany balance, net of tax of $37	—		—		—			—			(139	)		(139	)
Comprehensive income														5,485
Shares issued under employee stock purchase plan	3,234		32		3,912			—			—			3,944
Shares issued under employee stock incentive
plans, net	9,131		92		10,204			—			—			10,296
Share-based compensation expense	—		—		10,421			—			—			10,421
Balances as of March 31, 2011	227,311	$	2,273	$	385,911		$	(456,588	)	$	7,293		$	(61,111	)

	March 31, 2011		March 31, 2010
Assets:
Money market funds	$	68,560	$	108,485
Deferred compensation investments		1,227		1,154
Liabilities:
Deferred compensation liabilities		1,227		1,154

	Fair Value Measurements Using Input Levels:
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	—	$	68,560	$	—	$	68,560
Deferred compensation investments		—		1,227		—		1,227
Liabilities:
Deferred compensation liabilities		—		1,227		—		1,227

	As of March 31, 2011				As of March 31, 2010
	Carrying Value		Fair Value		Carrying Value		Fair Value
Senior secured term debt(1)	$	104,334	$	103,812	$	186,066	$	175,832
Subordinated term loans(2)		—		—		121,717		138,301
Convertible subordinated debt(3) (4)		135,000		133,126		22,099		21,547

	Amortization
Fiscal 2012	$	20,385
Fiscal 2013		12,834
Fiscal 2014		8,400
Fiscal 2015		3,092
Total as of March 31, 2011	$	44,711

Range of Exercise Prices					Stock Options Outstanding	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Stock Options Exercisable	Weighted- Average Exercise Price
$	0.11	-	$	0.51	108	$	0.31	4.75	47	$	0.32
$	0.77	-	$	1.08	6,689		0.98	5.14	1,193		0.97
$	1.14	-	$	1.71	1,898		1.44	3.73	1,684		1.47
$	1.77	-	$	2.54	4,302		2.13	2.50	4,204		2.13
$	2.59	-	$	3.82	7,696		3.23	2.45	7,463		3.25
$	3.95	-	$	4.55	314		4.00	3.40	277		4.00
$	6.70	-	$	8.34	559		6.77	1.07	559		6.77
$	8.84	-	$	12.02	514		10.10	0.40	514		10.10
					22,080	$	2.43	3.34	15,941	$	2.94

	Shares		Weighted-Average Grant Date Fair Value
Nonvested at March 31, 2008	4,908		$	2.48
Granted	3,870			1.41
Vested	(1,887	)		2.71
Forfeited	(633	)		2.17
Nonvested at March 31, 2009	6,258			1.78
Granted	2,526			1.45
Vested	(2,853	)		2.01
Forfeited	(796	)		0.83
Nonvested at March 31, 2010	5,135			1.64
Granted	5,757			1.95
Vested	(3,665	)		1.60
Forfeited	(587	)		1.45
Nonvested at March 31, 2011	6,640		$	1.95

	Lease Payments
For the year ending March 31,
2012	$	13,073
2013		11,400
2014		9,209
2015		8,396
2016		6,901
Thereafter		22,499
	$	71,478

	For the year ended March 31, 2011
(In thousands, except per share data)	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
Revenue	$	163,225		$	167,722	$	176,226	$	165,097
Gross margin		67,454			71,396		75,570		68,562
Net income (loss)		(2,696	)		3,025		5,864		(1,652	)
Basic net income (loss) per share		(0.01	)		0.01		0.03		(0.01	)
Diluted net income (loss) per share		(0.01	)		0.01		0.03		(0.01	)

	For the year ended March 31, 2010
	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
Revenue	$	160,340		$	174,926	$	181,710	$	164,451
Gross margin		61,643			76,629		74,716		67,049
Net income (loss)		5,008			11,355		4,636		(4,365	)
Basic net income (loss) per share		0.02			0.06		0.02		(0.02	)
Diluted net income (loss) per share		(0.02	)		0.04		0.02		(0.02	)

	Balance at beginning of period		Additions (releases) charged to expense			Deductions (i)			Balance at end of period
For the year ended:
March 31, 2009	$	5,746	$	569		$	(4,316	)	$	1,999
March 31, 2010		1,999		(453	)		(748	)		798
March 31, 2011		798		(502	)		107			403

	Year ended March 31, 2011
	(a) Number of securities to be issued upon exercise of outstanding stock options, warrants and rights	Weighted- average exercise price of outstanding stock options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding shares reflected in column (a))
Equity compensation plans approved by stockholders (1)	26,549	$	1.76	12,246
Equity compensation plans not approved by stockholders (2), (3)	2,171	$	3.55	—
	28,720	$	1.89	12,246

	~~(1)~~		Included in the stockholder approved plans are 6.6 million restricted stock units with a zero purchase price. The weighted average exercise price of outstanding stock options for stockholder approved plans is $2.34.

	~~(2)~~		The Supplemental Stock Option Plan (“SSOP”) was terminated April 1, 2003, from which time no new stock options or stock purchase rights will be granted. Outstanding stock options granted under the SSOP prior to April 1, 2003, remain outstanding and continue to be governed by the terms and conditions of the SSOP.

	~~(3)~~		Advanced Digital Information Corporation’s 1999 Stock Incentive Compensation Plan was assumed by Quantum on August 22, 2006 according to the terms detailed in the Agreement and Plan of Merger dated May 2, 2006 (“Merger Agreement”). Such outstanding stock options granted under this plan continue to be governed by the terms and conditions of the respective plan; however, the number of stock options and exercise prices of the outstanding stock options were changed in accordance with the formula in the Merger Agreement for the right to purchase Quantum common stock.

			Incorporated by Reference
Exhibit Number		Exhibit Description	Form	File No.	Exhibit(s)	Filing Date
	3.1	Amended and Restated Certificate of Incorporation of Registrant.	8-K	001-13449	3.1	August 16, 2007
	3.2	Amended and Restated By-laws of Registrant, as amended.	8-K	001-13449	3.1	December 5, 2008
	3.3	Certificate of Designation of Rights, Preferences and Privileges of Series B Junior Participating Preferred Stock.	S-3	333-109587	4.7	October 9, 2003
	3.4	Certificate of Amendment to the Bylaws of Quantum Corporation, as adopted on January 20, 2010.	8-K	001-13449	3.1	January 26, 2010
	4.1	Stockholder Agreement, dated as of October 28, 2002, by and between Registrant and Private Capital Management.	10-Q	001-13449	4.2	November 13, 2002
	4.2	Indenture for 3.50% Convertible Senior Subordinated Notes due 2015, between the Registrant and U.S. Bank National Association, as trustee, dated November 15, 2010, including the form of 3.50% Convertible Senior Subordinated Note due 2015.	8-K	001-13449	4.1	November 15, 2010
	10.1	Form of Indemnification Agreement between Registrant and the Named Executive Officers and Directors. *	8-K	001-13449	10.4	April 4, 2007
	10.2	Chief Executive Change of Control Agreement between Registrant and Jon W. Gacek.*	8-K	001-13449	10.3	April 5, 2011
	10.3	Executive Chairman Change of Control Agreement between Registrant and Richard E. Belluzzo.*	8-K	001-13449	10.4	April 5, 2011
	10.4	Form of Officer Change of Control Agreement between Registrant and each of Registrant’s Executive Officers (Other than the Executive Chairman and the CEO).*	8-K	001-13449	10.5	April 5, 2011
	10.5	Form of Amended and Restated Director Change of Control Agreement between Registrant and the Directors (Other than the Executive Chairman and the CEO).*	8-K	001-13449	10.2	May 10, 2011
	10.6	Amended and Restated 1993 Long-Term Incentive Plan effective November 10, 2007. *	8-K	001-13449	10.1	November 15, 2007
	10.7	Form of Restricted Stock Unit Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-Q	001-13449	10.3	November 7, 2008
	10.8	Form of Restricted Stock Unit Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *	10-Q	001-13449	10.4	November 7, 2008
	10.9	Form of Stock Option Agreement. For U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
	10.10	Form of Stock Option Agreement. For non-U.S. employees under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
	10.11	Form of Stock Option Agreement. For Chief Executive Officer under the Amended and Restated 1993 Long-Term Incentive Plan. *‡
	10.12	Amended and Restated Nonemployee Director Equity Incentive Plan effective November 10, 2007. *	8-K	001-13449	10.2	November 15, 2007