EXHIBIT 4.4

                                $25,000,000
                              ZITEL CORPORATION

                5% Convertible Subordinated Debentures Due 1999

                         PLACEMENT AGENCY AGREEMENT
                         --------------------------

                                                                May 19, 1997


Rochon Capital Group, Ltd.
  As Placement Agent
1000 Fourth Street, Suite 775
San Rafael, California  94901

Ladies and Gentlemen:

   This letter confirms our agreement (this "Agreement") to retain Rochon 
Capital Group, Ltd. as our exclusive agent (the "Placement Agent") through 
May 26, 1997 (the "Engagement Period") to identify for Zitel Corporation (the 
"Company") prospective purchasers (collectively, the "Purchasers") in a 
private placement (the "Placement") of up to $25,000,000 aggregate principal 
amount of 5% Convertible Subordinated Debentures Due 1999 (the "Debentures"), 
convertible into shares of the Company's common stock, no par value per share 
(the "Common Stock").

   The Placement Agent will have no obligation to purchase any of the 
Debentures offered by the Company in the Placement.  During the Engagement 
Period, the Placement Agent shall have the exclusive right to arrange for all 
sales of securities by the Company, including the exclusive right to identify 
buyers for the Debentures; provided, however, that the Company shall not be 
prohibited from issuing securities in connection with acquisitions or 
strategic alliances with potential corporate partners.  The Engagement Period 
shall be automatically extended for a reasonable period of time if, during 
the Engagement Period, sales relating to commitments from Purchasers are not 
consummated during the Engagement Period due to delays in the preparation of 
final documentation.

   The Placement is intended to be exempt from the registration requirements 
of the Securities Act of 1933, as amended (the "Securities Act"), pursuant to 
Section 4(2) and Regulation D ("Regulation D") of the rules and regulations 
of 

                      Exhibit 4.4 - Page 1


the Securities and Exchange Commission (the "Commission") promulgated under 
the Securities Act (the "Rules and Regulations").  In order to effectuate the 
Closing (as defined in Section 1 hereof), the Company, the Placement Agent 
and LaSalle National Bank shall enter into an escrow agreement (the "Escrow 
Agreement").

   The engagement described herein shall be in accordance with applicable 
laws and pursuant to the following procedures and terms and conditions:

   1. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.  The representations and 
warranties set forth in Section 2 of the Securities Purchase Agreements to be 
entered into between the Company and each Purchaser (the "Securities Purchase 
Agreements") are hereby incorporated by reference as of the date of 
consummation of the sale of the Debentures (the "Closing").

   2. COVENANTS OF THE COMPANY.

       (a) Neither the Company nor any affiliate (as defined in Rule 501(b) 
of Regulation D under the Securities Act) will sell, offer for sale or 
solicit offers to buy or otherwise negotiate in respect of any security (as 
defined in the Securities Act) which will be integrated with the sale of the 
Debentures or the shares of Common Stock issuable upon conversion of the 
Debentures (the "Underlying Common Shares") in a manner which would require 
the registration under the Securities Act of the Debentures or the Underlying 
Common Shares.

       (b) Any press release to be issued by the Company in connection with 
the Placement shall be subject to the prior review by the Placement Agent.  
In addition, each press release to be issued by the Company in connection 
with the Placement shall identify Rochon Capital Group, Ltd. as the Placement 
Agent.

   3. REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PLACEMENT AGENT.

      (a)  With respect to each offer or sale of the Debentures, neither the 
Placement Agent nor any of its representatives has engaged or will engage in 
any form of general solicitation or general advertising, including, but not 
limited to, advertisements, articles, notices or other communication 
published in any newspaper, magazine or similar 

                      Exhibit 4.4 - Page 2



medium or broadcast over television or radio, or any seminar or meeting whose 
attendees have been invited by any general solicitation or general 
advertising.

      (b) The Placement Agent covenants and agrees that it will take no 
action, nor fail to take any action, if such action or failure to take such 
action would have the effect that the offer or sale of the Debentures would 
not be exempt from the registration requirements of the Securities Act or the 
registration or qualification requirements of any state or political 
subdivision of the United States in which the Debentures are to be offered or 
sold.  The Placement Agent shall only offer the Debentures to persons for 
which the Placement Agent has a reasonable belief that such persons are 
"accredited investors" as such term is defined in Rule 501 under the 
Securities Act.

   4. COMPENSATION OF THE PLACEMENT AGENT.  The Company shall pay the 
Placement Agent, directly from the escrowed funds at the Closing, a fee of 
4.5% of the gross proceeds from the Placement hereunder.  The Company further 
agrees to pay to the Placement Agent all of the Placement Agent's actual 
out-of-pocket expenses incurred in connection with this transaction, 
regardless of whether the sales contemplated hereby are consummated, 
including, but not limited to, fees and disbursements of its counsel and 
counsel to the Purchasers (which fees shall be paid at the sole discretion of 
the Placement Agent), fees and disbursements of the escrow agent and any 
co-management and due diligence fees, up to $80,000, directly from the 
escrowed funds at Closing or, in the event there is no Closing, within five 
business days after submission of invoices or receipts therefor by the 
Placement Agent.  The Company will pay all of its expenses incurred in 
connection with these transactions.

   5. CLOSING.  The Closing may be held at such place or places as shall be 
specified by the Placement Agent. Debentures in the names of the respective 
Purchasers and in the respective denominations aggregating the full number of 
Debentures sold at the Closing shall be delivered by the Company to the 
Escrow Agent as contemplated by the Securities Purchase Agreements.

   6. CONDITION TO CLOSING.  The Company and the Placement Agent agree that 
the issuance and sale of the Debentures and all obligations of the Placement 
Agent provided herein shall be subject to the receipt by the Placement Agent 
of a legal opinion of Cooley Godward Castro Huddleson & Tatum, counsel to the 

                      Exhibit 4.4 - Page 3



Company, indicating that the Placement Agent is entitled to rely thereon, in 
the form required to be delivered pursuant to Section 7 the Securities 
Purchase Agreements.

   7. INDEMNIFICATION.

      (a)  The Company will indemnify and hold harmless the Placement Agent 
and each of its partners, directors, officers, associates, affiliates, 
subsidiaries, employees, consultants, attorneys and agents, and each person, 
if any, controlling either the Placement Agent or any of its affiliates 
within the meaning of either Section 15 of the Securities Act or Section 20 
of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), from 
and against any and all losses, claims, damages, liabilities, costs or 
expenses (and any legal or other expenses incurred by the Placement Agent in 
investigating or defending the same or in giving testimony or furnishing 
documents in response to a request of any government agency or to a subpoena) 
in any way relating to or in any way arising out of (i) the activities of the 
Placement Agent contemplated by this Agreement or in connection with the 
Placement, (ii) the inaccuracy of any representation or warranty, or the 
breach of any covenant, contained herein, or (iii) any offering documents or 
other materials including the Offering Materials, and will reimburse, as 
incurred, the Placement Agent and each such controlling or other person for 
any legal or other expenses incurred by the Placement Agent or such 
controlling or other person in connection with investigating, defending or 
appearing as a third-party witness in connection with any such loss, claim, 
damage, liability or action. Such indemnity shall not, however, cover any 
such loss, claim, damage, liability, cost or expense to the extent that it 
arises out of or is based upon (i) a breach by the Placement Agent of its 
obligations in Section 3 hereof (a "Non-Indemnity Event") or (ii) the willful 
misconduct of any person seeking indemnification hereunder.

     (b)  The Placement Agent will indemnify and hold harmless the Company 
and each person, if any, controlling the Company within the meaning of either 
Section 15 of the Securities Act or Section 20 of the Exchange Act, to the 
same extent set forth in subsection (a) above, but only to the extent that 
any loss, claim, damage, liability, cost or expense arises out of or is based 
upon a Non-Indemnity Event.

     (c)  If any action, proceeding or investigation is commenced by a third 
party as to which the indemnified party hereunder proposes to demand 
indemnification under this letter 

                      Exhibit 4.4 - Page 4



Agreement, it will notify the indemnifying party with reasonable promptness.  
The indemnified party shall have the right to retain counsel of its own 
choice (which choice shall be reasonably satisfactory to the indemnifying 
party) to represent it and such counsel shall, to the extent consistent with 
its professional responsibilities, cooperate with the indemnifying party and 
any counsel designated by the indemnifying party.  The indemnifying party 
will not be liable under this letter agreement for any settlement of any 
claim against the indemnifying party made without the indemnifying party's 
written consent, which shall not be unreasonably withheld.  Notwithstanding 
anything to the contrary contained in the foregoing paragraph (b) or the 
following paragraph (d), the Placement Agent shall not be obligated to pay 
any amount in respect of its obligation to indemnify or contribute greater 
than the Placement Fee.

     (d)  In order to provide for just and equitable contribution, if a claim 
for indemnification pursuant to this Section 7 is made but it is found in a 
final judgment by a court of competent jurisdiction (not subject to further 
appeal) that such indemnification may not be enforced in such case, even 
though the express provisions hereof provided for indemnification in such 
case, then the Company, on the one hand, and the Placement Agent, on the 
other hand, shall contribute to the losses, claims, damages, liabilities or 
costs to which the indemnified persons may be subject in accordance with the 
relative benefits received from the Placement of the Debentures and the 
securities underlying the Debentures by the Company, on the one hand, and the 
Placement Agent, on the other hand, and also the relative fault of the 
Company, on the one hand, and the Placement Agent, on the other hand, in 
connection with the statements, acts or omissions which resulted in such 
losses, claims, damages, liabilities or costs, and the relevant equitable 
considerations shall also be considered. No person found liable for a 
fraudulent misrepresentation shall be entitled to contribution from any 
person who is not also found liable for such fraudulent misrepresentation.

   8. NON-CIRCUMVENTION; RIGHT OF FIRST REFUSAL.

       (a)  NON-CIRCUMVENTION.  The Company hereby agrees that, whether or 
not this Agreement is terminated and/or whether or not the Placement is 
consummated, the Company will not enter into any agreement, transaction, or 
arrangement, including pursuant to Section 4(e) of the Securities Purchase 
Agreements, with any prospective purchaser (including their agents, 

                      Exhibit 4.4 - Page 5



principals and affiliates, the accounts and funds which they manage or 
advise, and regardless of whether a transaction is consummated with such 
purchaser) who has (i) been identified to the Company as a prospective 
purchaser by the Placement Agent or (ii) otherwise communicated with the 
Company regarding the Placement, unless such agreement, transaction or 
arrangement is effected through or with the written consent of the Placement 
Agent.  The Placement Agent shall, within five business days after the 
Closing, provide the Company with a list of the names of the parties to whom 
clause (i) of the preceding sentence applies, which list and names the 
Company agrees to hold strictly confidential; if there is no Closing, then 
such list shall be provided within five business days of the expiration of 
the Engagement Period.

    (b)  RIGHT OF FIRST REFUSAL.  For a period of 240 calendar days from the 
Closing Date, if the Company desires to sell any equity securities of the 
Company or securities convertible into or exchangeable or exercisable for any 
equity securities of the Company (other than in connection with underwritten 
public offerings, acquisitions or strategic alliances in which the Company 
issues securities to potential corporate partners), subject to the Securities 
Purchase Agreements, the Company will offer the Placement Agent in writing 
the exclusive right to find buyers for such securities upon terms that are 
reasonably acceptable to the Company and the Placement Agent.  The Placement 
Agent will then have 10 business days from the date of the offer to accept or 
reject it.  If accepted, the Placement Agent will have an additional 10 
business days from acceptance to obtain firm commitments from buyers to 
purchase the securities, or the Company will be free to engage others to 
assist it in offering such securities.  

   9. SURVIVAL.  The respective indemnities of the Company and the Placement 
Agent and the representations, warranties and agreements of the Company set 
forth in or made pursuant to this Agreement will remain in full force and 
effect, regardless of any termination or cancellation of this Agreement or 
any investigation made by or on behalf of the Placement Agent, the Company or 
any person referred to in Section 7 hereof, and shall survive any termination 
of this Agreement and/or issuance of the Debentures, and any successor or 
assign of the Placement Agent and/or its designee(s), the Company, or any 
such person or any legal representative of such person shall be entitled to 
the benefit of the respective indemnities, agreements, warranties and 
representations.

                      Exhibit 4.4 - Page 6



   10. TERMINATION.  Reserved.

   11. GENERAL PROVISIONS.

     (a)  PARTIES.  This Agreement shall inure solely to the benefit of, and 
shall be binding upon, the Placement Agent, the Company, the controlling and 
other persons referred to in Section 7 hereof, and their respective 
successors, legal representatives, heirs, designees and assigns, and no other 
person shall have or be construed to have any legal or equitable right, 
remedy or claim under or in respect of or by virtue of this Agreement or any 
provision herein contained.

     (b)  AMENDMENT.  No amendment or modification hereto, or waiver of the 
terms hereof, shall be valid unless in a writing executed by each of the 
parties hereto or by the party or parties to be bound.

     (c)  NOTICES.  All notices, requests and other communications under this 
Agreement shall be in writing and shall be deemed to have been delivered 48 
hours after having been mailed in a general or branch post office and 
enclosed in a registered or certified postpaid envelope; 24 hours after 
having been sent by overnight courier; when delivered to a telegraph company 
or when scanned graphically or otherwise by telegraphic communications 
equipment of the sending party and accompanied by a substantially 
contemporaneous telephone call; and, in each case, addressed to the 
respective parties at the addresses stated below or to such other changed 
addresses as the parties may have fixed by notice; PROVIDED, HOWEVER, that 
any notice of change of address shall be effective only upon receipt.

           To the Placement 

                 Agent:             Rochon Capital Group, Ltd.
                                    1000 Fourth Street, Suite 775
                                    San Rafael, California  94901
                                    Attention:  Phillip L. Neiman
                                    Telephone: (415) 459-4944
                                    Facsimile: (415) 459-6555 
  
            with a copy to:         Stroock & Stroock & Lavan LLP
                                    2029 Century Park East
                                    Suite 1800
                                    Los Angeles, CA 90067
                                    Attention:  Richard S. Forman, Esq.
                                    Telephone: (310) 556-5800
                                    Facsimile: (310) 556-5959

                      Exhibit 4.4 - Page 7



             To the Company:        Zitel Corporation
                                    47211 Bayside Parkway
                                    Fremont, California  94538
                                    Attention:  Henry C. Harris
                                    Telephone:  (510) 440-9600
                                    Facsimile:  (510) 550-9696

            with a copy to:         Cooley Godward Castro Huddleson & Tatum
                                    Five Palo Alto Square
                                    Palo Alto, California  94306
                                    Attention:  John Cardoza, Esq.
                                    Telephone:  (415) 693-2045
                                    Facsimile:  (415) 951-3699

      (d)  SEVERABILITY.  If any provision herein is found to be unenforceable, 
invalid or illegal, such provision shall be deemed deleted from this 
Agreement and the remainder of this Agreement shall not be affected or 
impaired thereby.

      (e)  ATTORNEYS' FEES.  If any action, including, without limitation, 
arbitration, should arise among the parties hereto to enforce or interpret 
the provisions of this Agreement, the prevailing party in such action shall 
be reimbursed for all reasonable expenses incurred in connection with such 
action, including reasonable attorneys' fees.
 
      (f)  INTEGRATION.  This Agreement expresses the entire agreement and 
understanding of the parties hereto with respect to the matters set forth 
herein and supersedes all prior agreements, arrangements and understandings 
among the parties hereto with respect to the matters set forth herein.

      (g)  GOVERNING LAW.  This Agreement shall be construed and enforced in 
accordance with the laws of the State of New York without regard to the 
principles of conflicts of laws.

      (h)  COUNTERPARTS.  This Agreement may be executed in any number of 
counterparts, each of which shall constitute an original, but all of which 
shall together constitute one and the same agreement.  Facsimile signatures 
are considered to be originals and shall have the same effect.

        (i)  FURTHER ASSURANCES.  The parties hereto agree to execute any and 
all such further agreements, instruments or documents, and to take any and 
all such further action, as may be necessary or desirable to carry into 
effect the purpose and intent of this Agreement.

                      Exhibit 4.4 - Page 8



      (j)  HEADINGS.  The headings in this Agreement are for convenience of 
reference only and shall not affect the meanings herein.

   If the foregoing correctly sets forth the understandings among the 
Placement Agent and the Company, please so indicate in the space provided 
below for that purpose, whereupon this letter shall constitute a binding 
agreement among us.

                                       Very truly yours,

                                       ZITEL CORPORATION



                                       By:
                                          ------------------------------------
                                          Name:  Henry C. Harris
                                          Title: Chief Financial Officer

ACCEPTED AND AGREED TO AS OF
THE DATE FIRST WRITTEN ABOVE:

ROCHON CAPITAL GROUP, LTD.



By:                            
  -------------------------------------------
     Name:  Phillip L. Neiman
     Title: President




                      Exhibit 4.4 - Page 9