EXHIBIT 10.1 		 		 Restatement #1: Effective October 28, 1986 		 Restatement #2: Effective February 7, 1989 		 Restatement #3: Effective October 16, 1990 		 Restatement #4: Effective January 28, 1992 		 Restatement #5: Effective August 1, 1995 			 STRATUS COMPUTER, INC. 		 STOCK OPTION PLAN (January, 1983) 			 RESTATEMENT NUMBER FIVE 1. Purpose. The purpose of this Plan is to advance the interests of Stratus Computer, Inc. (the "Company") by providing an opportunity to selected key employees of the Company and its subsidiaries to purchase stock of the Company through the exercise of options granted under this Plan. By encouraging such stock ownership, the Company seeks to attract, retain and motivate employees of training, experience and ability. It is intended that this purpose will be effected by the granting of stock options as provided herein. 2. Amendment and Restatement of Prior Plan. This plan continues, in 	 amended and restated form, the Incentive Stock Option Plan 	 (January, 1983) (the "Incentive Stock Option Plan"), as previously 	 amended and restated effective October 28, 1986 ("Restatement 	 Number One"), February 7, 1989 ("Restatement Number Two"), October 	 16, 1990 ("Restatement Number Three") and January 28, 1992 	 ( Restatement Number Four ) which Amendment extended the 	 termination date of the Plan until December 31, 2003 and for 	 purposes of Section 422(b)2 of the Internal Revenue Code of 1986, 	 as Amended (the Code ), constitutes a new plan. This Stratus 	 Computer, Inc. Stock Option Plan (January, 1983) Restatement 	 Number Five (the "Plan"), effective as of August 1, 1995, reflects 	 further amendments to the Plan adopted by the Board of Directors 	 of the Company (the "Board") on August 1, 1995, the sole purpose 	 of which is to cause the Plan to comply with the requirements of 	 Rule 16b-3 promulgated under Section 16 of the Securities Exchange 	 Act of 1934, as Amended ( Rule 16b-3 ). 3. Effective Date. The Plan became effective as of January 1, 1983. 	 This Restatement Number Five of the Plan became effective on 	 August 1, 1995, the date the last amendment incorporated in this 	 restatement was adopted by the Board. To the extent at any time 	 that amendments are made to the Plan for which shareholder 	 approval is necessary under applicable tax or securities laws or 	 under the Board action adopting such amendment, options that may 	 be granted only as a result of such amendments may be granted 	 before such approval, but no such options may be exercised until 	 such approval is obtained and such options will be null and void 	 if such approval is not obtained. 4. Stock Subject to the Plan. The shares that may be granted under 	 this Plan shall not exceed in the aggregate 9,380,200 shares of 	 the $.01 par value Common Stock of the Company (the "Shares"); 	 provided, however, that such maximum number of Shares shall be 	 reduced by the number of any Shares that are made subject to 	 options (which have not subsequently expired or been terminated 	 before exercise) pursuant to the Stratus Computer, Inc. Non- 	 Qualified Common Stock Option Plan. Any Shares subject to an 	 option under this Plan which for any reason expires or is 	 terminated unexercised as to such Shares may again be the subject 	 of an option under the Plan. In addition, any Shares purchased by 	 an optionee upon exercise of an option under this Plan that are 	 subsequently repurchased by the Company pursuant to the terms of 	 such option may again be the subject of an option under the Plan. 	 The Shares delivered upon exercise of options under this Plan 	 may, in whole or in part, be either authorized but unissued Shares 	 or issued Shares reacquired by the Company. 5. Administration. This Plan shall be administered by a committee 	 (the "Stock Option Committee") consisting of three (3) or more 	 members of the Board who are not employees of the Company, none of 	 whom shall be eligible to participate in the Plan and all of whom 	 shall be disinterested persons as defined under Rule 16b-3. The 	 Stock Option Committee shall be appointed by and shall serve at 	 the pleasure of the Board. Subject to the provisions of this 	 Plan, said Committee shall have full power to construe and 	 interpret the Plan and to establish, amend and rescind rules and 	 regulations for its administration. 6. Eligible Employees. Options may be granted to such key employees 	 of the Company or of any of its subsidiaries, including members of 	 the Board who are also employees of the Company or any of its 	 subsidiaries, as are selected by the Stock Option Committee. 7. Duration of the Plan. This Plan shall terminate on December 31, 	 2003, unless terminated earlier pursuant to Paragraph 13 	 hereafter, and no options may be granted thereafter. 8. Restrictions on Incentive Options. Incentive options (but not 	 nonqualified options) granted under this Plan shall be subject to 	 the following restrictions: 	 (a) Limitation on Number of Shares. (i) With respect to 		 incentive options granted before January 1, 1987, the 		 aggregate fair market value, determined as of the date the 		 incentive option is granted, of the Shares for which an 		 employee may be granted incentive option in any calendar 		 year shall not exceed $100,000 plus any "unused limit 		 carryovers," as that term is defined under Section 		 422A(c)(4) of the Code (as in effect immediately prior to 		 its amendment by the Tax Reform Act of 1986), available in 		 such year; or (ii) for incentive options granted after 		 December 31, 1986, the aggregate fair market value, 		 determined as of the date the incentive option is granted, 		 of the Shares with respect to which incentive options are 		 exercisable for the first time by an employee during any 		 calendar year shall not exceed $100,000. In the event that 		 an employee is eligible to participate in any other 		 incentive stock option plans of the Company or any of its 		 subsidiaries which are also intended to comply with the 		 provisions of Section 422 of the Code, the applicable annual 		 limitation shall apply to the aggregate number of Shares for 		 which incentive stock options may be granted under all such 		 plans. 	 (b) 10% Stockholder. If any employee to whom an incentive 		 option is granted pursuant to the provisions of the Plan is 		 on the date of grant the owner of stock (as determined 		 under Section 424(d) of the Code) possessing more than 10% 		 of the total combined voting power of all classes of stock 		 of the Company or any of its subsidiaries, then the 		 following special provisions shall be applicable to the 		 incentive option granted to such individual: 	 (i) The option price per Share subject to such incentive option 		 shall not be less than 110% of the fair market value of one 		 Share on the date of grant; and The incentive option shall 		 not have a term in excess of five (5) years from the date of 		 grant. 	 (c) Effect of Other Outstanding Incentive Options. No 		 incentive option granted before January 1, 1987 hereunder 		 shall be exercisable by any optionee while there is 		 "outstanding," within the meaning of Section 422A(c)(7) of 		 the Code (as in effect immediately prior to its amendment by 		 the Tax Reform Act of 1986), any incentive option or other 		 incentive stock option which was granted to the optionee 		 before the granting of the incentive option under this Plan 		 and which permits the optionee to purchase stock in (i) the 		 Company, (ii) a corporation which (at the time of the 		 granting of the incentive option under this Plan) is a 		 parent or subsidiary of the Company, or (iii) a predecessor 		 corporation of any of such corporations. 9. Terms and Conditions of Options. Options granted under this Plan 	 shall be evidenced by stock option agreements in such form and not 	 inconsistent with the Plan as the Stock Option Committee shall 	 approve from time to time, which agreements shall evidence the 	 following terms and conditions: 	 (a) Price. Subject to the condition of subparagraph 		 (b)(i) of Paragraph 8, if applicable, with respect to each 		 incentive option, the purchase price per Share of stock 		 payable upon the exercise of each option granted hereunder 		 shall be not less than 100% of the fair market value of the 		 stock on the day the option is granted. With respect to 		 each nonqualified option, the purchase price per Share 		 payable upon the exercise of each option granted hereunder 		 shall be determined by the Stock Option Committee at the 		 time the option is granted and shall not be less than 50% of 		 the fair market value of one Share on the date of grant. 	 (b) Number of Shares. Each option agreement shall specify the 		 number of Shares to which it pertains. 	 (c) Exercise of Options. Subject to the conditions on 		 incentive options of subparagraph (b)(ii) and (c) of 		 Paragraph 8, if applicable, each option shall be exercisable 		 for the full amount or for any part thereof and at such 		 intervals or in such installments as the Stock Option 		 Committee may determine at the time it grants such option; 		 provided, however, that no option shall be exercisable with 		 respect to any Shares later than ten (10) years after the 		 date of the grant of such option. 	 (d) Notice of Exercise and Payment. An option shall be 		 exercisable only by delivery of a written notice to the 		 Stock Option Committee, any member of the Committee, the 		 Company's Treasurer, or any other officer of the Company 		 designated by the Committee to accept such notices on its 		 behalf, specifying the number of Shares for which it is 		 exercised. If said Shares are not at the time effectively 		 registered under the Securities Act of 1933, as amended, the 		 optionee shall include with such notice a letter, in form 		 and substance satisfactory to the Company, confirming that 		 the Shares are being purchased for the optionee's own 		 account for investment and not with a view to distribution. 		 Payment shall be made in full at the time of delivery to the 		 optionee of a certificate or certificates covering the 		 number of Shares for which the option was exercised. 		 Payment shall be made (i) by cash or check, (ii) if 		 permitted by the Stock Option Committee, by delivery and 		 assignment to the Company of Shares of Company stock having 		 a fair market value (as determined by the Stock Option 		 Committee) equal to the option price, (iii) [only with 		 respect to optionees who are officers or directors of the 		 Company (or its affiliates) who, by reason of their 		 relationship to the Company, would be subject to Section 16 		 of the Securities Exchange Act of 1934, as amended in 		 connection with their acquisition or disposition of Common 		 Stock of the Company (a "Section 16 Person")], if permitted 		 by the Stock Option Committee, by promissory note, or (iv) 		 by a combination of (i), (ii) and (iii) (if applicable). 		 The value of the Company stock for such purpose shall be its 		 fair market value as of the date the option is exercised, as 		 determined in accordance with procedures to be established 		 by the Stock Option Committee. 	 (e) Withholding Taxes; Delivery of Shares. The Company's 		 obligation to deliver Shares of Common Stock upon exercise 		 of a nonqualified option, in whole or in part, shall be 		 subject to the optionee's satisfaction of all applicable 		 federal, state and local income and employment tax 		 withholding obligations. The optionee may satisfy the 		 obligation, in whole or in part, by electing to have the 		 Company withhold Shares of Common Stock having a value equal 		 to the amount required to be withheld. The value of Shares 		 to be withheld shall be based on the fair market value of 		 the Shares on the date the amount of tax to be withheld is 		 to be determined (the "Tax Date"). The optionee's election 		 to have Shares withheld for this purpose will be subject to 		 the following restrictions: (1) the election must be made 		 prior to the Tax Date, (2) the election must be 		 irrevocable, (3) the election will be subject to the right 		 of the Committee to disapprove the election, and (4) if a 		 participant is a Section 16 Person, such election must 		 comply in all respects with the requirements of Rule 16b-3. 	 (f) Non-Transferability. No option shall be transferable 		 by the optionee otherwise than by will or the laws of 		 descent or distribution, and each option shall be 		 exercisable during his lifetime only by him. 	 (g) Termination of Options. Each option shall terminate 		 and may no longer be exercised if the optionee ceases for 		 any reason to be a employee of the Company, or its parent or 		 a subsidiary, except that: 		 (i) if the optionee's employment shall have terminated for 			any reason other than cause, disability (as defined 			below) or death, he may at any time within a period of 			thirty (30) days after such termination of employment 			exercise his option to the extent that the option was 			exercisable by him on the date of termination of his 			employment; 	 (ii) if the optionee's employment shall have been terminated 		 because of disability within the meaning of Section 22(e)(3) 		 of the Code, with respect to incentive options granted to 		 the optionee, the optionee may, at any time within a 		 period of one (1) year after such termination of 		 employment, and with respect to nonqualified options granted 		 to the optionee, the optionee may, at any time within a 		 period of one year and one day after such termination of 		 employment, exercise his option to the extent that the 		 option was exercisable by him on the date of termination of 		 his employment; and 	 (iii) if the optionee dies at a time when the option was 		 exercisable by him, then his estate, personal representative 		 or beneficiary to whom it has been transferred pursuant to 		 paragraph 9(f) hereof may exercise the option to the extent 		 the optionee might have exercised it at the time of his 		 death; (a) at any time within a period of six (6) months 		 following his death if the optionee was not an employee at 		 the time of his death, or, (b) in the event his employment 		 with the Company is terminated by his death, one (1) year 		 following such termination of employment. In no case, 		 however, may an option be exercised to any extent by anyone 		 after the date of expiration of the option. 	 (h) Rights as Shareholder. The optionee shall have no 		 rights as a shareholder with respect to any Shares covered 		 by his option until the date of issuance of a stock 		 certificate to him for such Shares. 10. Stock Dividends; Stock Splits; Stock Combinations; 	 Recapitalizations. Appropriate adjustment shall be made in the 	 maximum number of Shares of Common Stock subject to the Plan and 	 in the number, kind, and option price of Shares covered by 	 outstanding options granted hereunder to give effect to any stock 	 dividends or other distribution (which exceeds five percent of the 	 total number of Shares of Common Stock outstanding at the close of 	 business on the date fixed for the determination of stockholders 	 entitled to receive such stock dividend or distribution), stock 	 splits, stock combinations, recapitalizations and other similar 	 changes in the capital structure of the Company after the 	 effective date of the Plan. 11. Merger; Sale of Assets; Dissolution. In the event of a change of 	 the Common Stock resulting from a merger or similar 	 reorganization as to which the Company is the surviving 	 corporation, the number and kind of Shares which thereafter may be 	 optioned and sold under this Plan and the number and kind of 	 Shares then subject to options granted hereunder and the price per 	 share thereof shall be appropriately adjusted in such manner as 	 the Stock Option Committee may deem equitable to prevent 	 substantial dilution or enlargement of the rights available or 	 granted hereunder. Except as otherwise determined by the Board, 	 a merger or a similar reorganization which the Company does not 	 survive, or a sale of all or substantially all of the assets of 	 the Company, shall cause every option outstanding hereunder to 	 terminate, to the extent not then exercised, unless any surviving 	 entity agrees to assume the obligations hereunder. 12. Definitions. 	 (a) The term "key employees" means those executive, 		 administrative, operational or managerial employees who are 		 determined by the Stock Option Committee to be eligible for 		 options under this Plan. 	 (b) The term "option", unless otherwise indicated, means either 		 an incentive option or a nonqualified option. The term 		 "options" refers to both incentive options or nonqualified 		 options. 	 (c) The term "optionee" means a key employee to whom an option 		 is granted under this Plan. 	 (d) The term "parent" shall have, for purposes of this Plan, the 		 meaning ascribed to it under Section 424(e) of the Code. 	 (e) The term "subsidiary shall, for purposes of this Plan, have 		 the meaning ascribed to it under Section 424(f) of the Code. 13. Termination or Amendment of Plan. The Board may at any time 	 terminate this Plan or make such changes in or additions to the 	 Plan as it deems advisable without further action on the part of 	 the shareholders of the Company, provided: 	 (a) that no such termination or amendment shall adversely affect 		 or impair any then outstanding option without the consent of 		 the optionee holding such option; and 	 (b) that any such amendment which: 		 		 (i) increases the maximum number of Shares subject to this 			Plan (subject to the provisions of Section 10), 		 (ii) changes the class of persons eligible to participate 			in this Plan, or 		 (iii) materially increases the benefits accruing to 			participants under this Plan; shall be subject to 			approval by the shareholders of the Company within one 			(1) year from the effective date of such amendment and 			shall be null and void if such approval is not 			obtained.