Document:

<PAGE>

                                PROMISSORY NOTE

$1,320.00                                                        January 4, 2001
---------                                                     New York, New York

         FOR VALUE RECEIVED, the undersigned, DIAMOND LAUFFIN, (the "Payor"),
with an address at 32 South Wendy Drive, Newbury Park, CA 91320, promises to pay
to the order of NEXSAN CORPORATION, a Delaware corporation ("Payee") with
offices at c/o Beechtree Capital, Ltd., 1 Rockefeller Plaza, New York, NY 10020,
the principal amount of One Million Three Hundred Twenty Thousand ($1,320,000)
Dollars, in such coin or currency of the United States of America as at the time
of payment shall be legal tender for the payment of public or private debts,
together with interest thereon at the rate of 5.61% per annum. Interest accrued
hereunder shall be due and payable on the stated or any accelerated maturity
date, and the principal amount hereof, together with all accrued but unpaid
interest thereon, shall be paid on the fifth anniversary of the date hereof.

         This Note is issued by the Payor as payment in connection with the
purchase by the Payor of two million (200,000,000) shares of the common stock
("Common Stock") of the Payee pursuant to a Restricted Stock Purchase Agreement
dated the date hereof and is entitled to the benefits thereof.

         1.   Events of Default.

              a. Upon the occurrence of any of the following events (hereinafter
called "Events of Default") which shall have occurred and be continuing:

                  (i) The Payor shall default in any payment of principal or
         interest due under this Note and fail to cure such default within ten
         days after notice thereof;

                  (ii) (1) The Payor shall commence any proceeding or other
         action relating to him in bankruptcy or seek readjustment of his debts,
         receivership, composition or any other relief under the Bankruptcy Act,
         as amended, or under any other insolvency, readjustment of debt or any
         other similar act or law, of any jurisdiction, domestic or foreign, now
         or hereafter existing; or (2) the Payor shall admit the material
         allegations of any petition or pleading in connection with any such
         proceeding; or (3) the Payor makes a general assignment for the benefit
         of his creditors;

                  (iii) (1) The commencement of any proceedings or the taking of
         any other action against the Payor in bankruptcy or seeking the
         reorganization, arrangement or readjustment of his debts, or any other
         relief under the Bankruptcy Act, as amended, or under any other
         insolvency, readjustment of debt or any other similar act or law of any
         jurisdiction, domestic or foreign, now or hereafter existing and the
         continuance of any of such events for sixty (60) days undismissed,
         unbonded or undischarged; or (2) the issuance of a warrant of
         attachment, execution or similar process against substantially all of
         the property of the Payor and the continuance of such event for thirty
         (30) days undismissed, unbonded and undischarged; or

                  (iv) (1)The Payor voluntarily elects to terminate his or her
         employment agreement with, or his or her arrangement for the provision
         of services to, the Payee, or (2) the Payee elects to terminate the
         Payor's employment or service agreement for Cause, as such term is
         defined in the Option Plan, then, and in any such event, the Payee may,
         by written notice to the Payor, declare

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         the entire unpaid principal amount of this Note, together with all
         accrued but unpaid interest thereon, due and payable, and the same
         shall forthwith become due and payable upon without presentment,
         demand, protest, or other notice of any kind, all of which are
         expressly waived.

              b. Non-Waiver and Other Remedies. No course of dealing or delay on
the part of the holder of this Note in exercising any right hereunder shall
operate as a waiver thereof or otherwise prejudice the rights of the holder of
this Note. No remedy conferred hereby shall be exclusive of any other remedy
referred to herein or now or hereafter available at law, in equity, by statute
or otherwise.

         2.   Security.

              (a) Pledge Agreement. This Note is secured by a Pledge Agreement
between the Payor and the Payee, dated of even date herewith (the "Pledge
Agreement"), pursuant to which the Payor has pledged the Common Stock as
collateral for payment hereunder.

              (b) Recourse. No recourse under or upon any obligation, covenant
or agreement of this Note, or for any claim based hereon or otherwise in respect
hereof, shall be had against the Payor or his assigns, except (i) for accrued
and unpaid interest, and (ii) in the event the amount actually applied to the
payment of principal of this Note after payment of costs and expenses and
accrued but unpaid interest hereon upon any sale by the Payee of the Common
Stock (or any other collateral held as security for this Note) pursuant to
Section 3 of the Pledge Agreement, or otherwise, is less than the original
principal amount hereof, then this Note shall be with recourse to the Payor as
to not more than thirty three and one-third percent (33 1/3 %) of the principal
remaining unpaid immediately prior to such application.

         3.   Prepayment. The indebtedness evidenced by this Note may be prepaid
by the Payor at any time in whole or in part from time to time, without premium
or penalty, provided that any prepayment of any portion of the outstanding
principal amount hereof shall be accompanied by all accrued but unpaid interest
thereon.

         4.   Lost Documents. Upon receipt by the Payor of evidence reasonably
satisfactory to him of the loss, theft, destruction or mutilation of this Note
or any Note exchanged for it, and (in the case of loss, theft or destruction) of
indemnity reasonably satisfactory to him, and upon reimbursement to the Payor of
all reasonable expenses incidental thereto, and upon surrender and cancellation
of such Note, if mutilated, the Payor will make and deliver to the Payee in lieu
of such Note a new Note of like tenor and unpaid principal amount and dated as
of the original date of this Note.

         5.   No Presentment, etc. The Payor and any endorsers, sureties and
guarantors of this Note waive presentment for payment, demand, protest, notice
of protest and notice of dishonor hereof, and all other notices to which they
may be entitled.

         6.   Miscellaneous.
              a. Parties in Interest. All covenants, agreements and undertakings
in this Note by and on behalf of any of the parties hereto shall bind and inure
to the benefit of the respective permitted successors and assigns of the parties
hereto whether so expressed or not.

              b. Notices. All notices, requests, consents and demands shall be
made in writing and shall be sent, and deemed delivered, in the manner
prescribed in Paragraph 12 of the Pledge Agreement.

              c. Waiver. The failure of the Payee to exercise any right or
remedy granted to him hereunder on any one or more instances, shall not
constitute a waiver of any default by the Payee, and all such rights and
remedies shall remain continuously in force. No delay or omission in the
exercise or enforcement by the Payee of any rights or remedies shall be
construed as a waiver of any right or remedy

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of the Payee; and no exercise or enforcement of any such right or remedy shall
be held to exhaust any other right or remedy of the Payee.

              d. Illegality. If any one or more of the provisions contained in
this Note shall for any reason be held to be invalid, illegal or unenforceable,
such invalidity, illegality or unenforceability shall not affect any other
provisions of this Note and this Note shall be construed as if such invalid,
illegal or unenforceable provision had never been contained herein.

              e. Amendment. This Note may not be changed orally, but only by an
instrument in writing duly executed by the party against which enforcement of
any waiver, change, modification or discharge is sought.

              f. Construction. This Note shall be construed and enforced in
accordance with, and the rights of the parties shall be governed by, the laws of
the State of New York.

<PAGE>

         IN WITNESS WHEREOF, this Note has been executed and delivered by the
Payor on the date specified above.

                                            By:   /s/ Diamond Lauffin
                                               -------------------------------
                                               Diamond Lauffin, as Payor

ACCEPTED:

NEXSAN CORPORATION

By: /s/ Martin Boddy
    ----------------
         Name:       Martin Boddy

         Title:        CEO

<PAGE>

                               NEXSAN CORPORATION

                       RESTRICTED STOCK PURCHASE AGREEMENT

         Unless otherwise defined herein, capitalized terms defined in the 2001
Stock Plan (the "Plan") of Nexsan Corporation (the "Company") shall have the
same meanings when used in this Restricted Stock Purchase Agreement (the
"Agreement").

I.       NOTICE OF GRANT OF STOCK PURCHASE RIGHT
         ---------------------------------------

         DIAMOND LAUFFIN  ( the "Purchaser")

         You have been granted the right to purchase Common Stock of the
Company, subject to the terms and conditions of this Agreement (the
"Agreement"), as follows:

         Grant Number                                         1
                                                              -

         Date of Grant                                        -------------
         Exercise Price Per Share                             $0.66
                                                              -------------
         Total Number of Shares Subject to This Stock
         Purchase Right ("Shares")                             2,000,000
                                                              -------------

Non-Transferability of Stock Purchase Right.

         This Stock Purchase Right may not be transferred in any manner other
than by will or by the laws of descent or distribution and may be exercised
during the lifetime of Purchaser only by Purchaser. The terms of the Plan and
this Agreement shall be binding upon the executors, administrators, heirs,
successors and assigns of the Purchaser.

II.      AGREEMENT
         ---------

         1.   Sale of Stock. The Company hereby agrees to sell to the Purchaser,
and the Purchaser hereby agrees to purchase the number of Shares set forth above
in the Notice of Grant of Stock Purchase Right, at the exercise price per share
set forth in the Notice of Grant of Stock Purchase Right (the "Exercise Price"),
and subject to the terms and conditions of the Plan, which is incorporated
herein by reference. Subject to Section 14(c) of the Plan, in the event of a
conflict between the terms and conditions of the Plan and this Agreement, the
terms and conditions of the Plan shall prevail.

         2.   Payment of Purchase Price. Purchaser herewith (i) delivers to the
Company the aggregate Exercise Price for the Shares by promissory note ("Note")
in the form of Exhibit A hereto, (ii) pledges the Shares to the Company to
secure the Note pursuant to a Pledge

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Agreement in the form of Exhibit B attached hereto and (iii) assigns the Shares
pursuant to an Assignment Separate From Certificate in the form of Exhibit B-1.

         3.   Purchaser's Representations. In the event the Shares have not been
registered under the Securities Act of 1933, as amended, at the time this Stock
Purchase Right is exercised, the Purchaser shall, if required by the Company,
concurrently with the exercise of all or any portion of this Stock Purchase
Right, deliver to the Company his or her Investment Representation Statement in
the form attached hereto as Exhibit C.

         4.   Repurchase Option.

              (a) In the event the Purchaser's continuous status as an employee
and/or independent contractor (collectively "Service Provider") terminates for
any or no reason (including death or Disability), the Company shall, upon the
date of such termination (as reasonably fixed and determined by the Company),
have an irrevocable, exclusive option (the "Repurchase Option") for a period of
sixty (60) days from such date to repurchase up to that number of shares which
constitute the Unvested Shares (as defined in Section 5) at the Exercise Price
per share, plus interest at the rate of interest set forth in the Note (the
"Repurchase Price").

              (b) The Repurchase Option shall be exercised by the Company by
delivering written notice to the Purchaser or the Purchaser's executor (with a
copy to the Escrow Holder (as defined in Section 8)) and, at the Company's
option, (i) by delivering to the Purchaser or the Purchaser's executor a check
in the amount of the aggregate Repurchase Price, or (ii) by the Company
canceling an amount of the Purchaser's indebtedness to the Company equal to the
aggregate Repurchase Price, or (iii) by a combination of (i) and (ii) so that
the combined payment and cancellation of indebtedness equals such aggregate
Repurchase Price. Upon delivery of such notice and the payment of the aggregate
Repurchase Price in any of the ways described above, the Company shall become
the legal and beneficial owner of the Unvested Shares being repurchased and all
rights and interests therein or relating thereto, and the Company shall have the
right to retain and transfer to its own name the number of Unvested Shares being
repurchased by the Company.

              (c) Whenever the Company shall have the right to repurchase the
Unvested Shares hereunder, the Company may designate and assign one or more
employees, officers, directors or shareholders of the Company or other persons
or organizations to exercise all or a part of the Company's Repurchase Option to
purchase all or a part of the Unvested Shares. If the Fair Market Value of the
Unvested Shares to be repurchased on the date of such designation or assignment
(the "Repurchase FMV") exceeds the aggregate Repurchase Price of the Unvested
Shares, then each such designee or assignee shall pay the Company cash equal to
the difference between the Repurchase FMV and the aggregate Repurchase Price of
Unvested Shares to be purchased.

                                       2

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              (d) If the Company or its assignee does not elect to exercise the
Repurchase Option conferred above by giving the requisite notice within sixty
(60) days following Purchaser's termination as a Service Provider, the
Repurchase Option shall terminate.

         5.   Release of Shares From Repurchase Option (Vesting).

              (a) Shares purchased pursuant to this Agreement shall be released
from the Repurchase Option (sometimes hereafter referred to as "vest" or
"vesting") not earlier than the second anniversary of the Date of Grant.
Notwithstanding anything to the contrary in this Agreement, Shares not vested
before December 31, 2005 shall never thereafter vest and shall, subject to
Section 4(d) above, always remain subject to the Repurchase Option. The
determination of whether any Shares shall vest shall be made as of the last day
of each month ending on or after the second anniversary of the Date of Grant and
on or before the fifth anniversary of the Date of Grant based upon on the
respective amounts (the "Target") of Sales (defined below) achieved by the
Company during the Rolling Period (defined below) ended on such day. In the
event that the term of the Employment Agreement, dated as of the date hereof,
between the Purchaser and the Company (the "Employment Agreement") is extended
beyond the initial five-year term, then the determination of whether any Shares
vest shall be made as of the last day of each month during such extended term or
terms. The number of Shares (expressed in one-sixteenth (1/16) denominations of
the total number of Shares subject to this Agreement) in which Purchaser shall
vest is set forth immediately to the left of the corresponding Target. The
Company shall be considered to have achieved a Target if Sales of the Company
for any Rolling Period equal or exceed the amount thereof set forth in the same
row as the Target in the table below. The Purchaser shall be entitled to vest in
the number of Shares set forth to the left of the highest Target achieved. Once
vested, Shares shall not cease to be vested even if the Company fails to achieve
a Target that was achieved in a prior Rolling Period. For purposes of this
Section 5, the Date of Grant shall be deemed to be the January 1, 2001.

Illustration: upon the Company achieving Sales of $70,000,000 (i.e., Target 1)
for a Rolling Period, the Purchaser will vest in two-sixteenths (2/16) of the
total number of Shares subject to this Agreement, at the close of such Rolling
Period (provided, however, that the close of such Rolling Period is after the
second anniversary of the Agreement). Should the Company achieve Sales of
$150,000,000 (i.e., Target 4) for a subsequent Rolling Period, the Purchaser
will vest in an additional four-sixteenths (4/16) of the total number of Shares
subject to this Agreement, so as to be vested on a cumulative basis in
six-sixteenths (6/16) of the total number of Shares subject to this Agreement,
at the close of the subsequent Rolling Period (provided, however, that the close
of such subsequent Rolling Period is after the second anniversary of this
Agreement).

                                       3

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          ---------------------------------------------------------------------

          Stock to Vest     Target     Sales ('000s)    Cumulative
                                                       Vested Stock

                            ---------------------------------------------------
            2/16            Target 1     $ 70,000           2/16
                            ---------------------------------------------------
            1/16            Target 2     $110,000           3/16
                            ---------------------------------------------------
            1/16            Target 3     $130,000           4/16
                            ---------------------------------------------------
            2/16            Target 4     $150,000           6/16
                            ---------------------------------------------------
            1/16            Target 5     $170,000           7/16
                            ---------------------------------------------------
            1/16            Target 6     $180,000           8/16
                            ---------------------------------------------------
            1/16            Target 7     $190,000           9/16
                            ---------------------------------------------------
            3/16            Target 8     $200,000           12/16
                            ---------------------------------------------------
            1/16            Target 9     $225,000           13/16
                            ---------------------------------------------------
            1/16            Target 10    $250,000           14/16
                            ---------------------------------------------------
            1/16            Target 11    $275,000           15/16
                            ---------------------------------------------------
            1/16            Target 12    $300,000           16/16
                            ---------------------------------------------------

              Total Stock to Vest                             100%

          ---------------------------------------------------------------------

"Rolling Period" means, as of the last day of any month beginning on the second
anniversary of the Date of Grant and ending before the later of the (i) fifth
anniversary of the Date of Grant, or (ii) the extended term of the Employment
Agreement, the immediately preceding twelve (12) month period ending on such
day.

"Sales" means the total amount of sales, net of returns, discounts and
allowances, of the Company .

All determinations of Sales shall be based on the regularly prepared financial
statements of the Company, which need not be audited; provided, that if an audit
of the Company's financial statements results in a change to any unaudited
statements, the audited statements shall control for purposes of this Agreement.

              (b) Any of the Shares which have not yet been released from the
Company's Repurchase Option are referred to herein as "Unvested Shares."

              (c) The Shares which have been released from the Company's
Repurchase Option shall be delivered to the Purchaser at the Purchaser's request
(see Section 8).

              (d) In the event that Purchaser's relationship as a Service
Provider with the Company, and/or any of its Parent or Subsidiary companies,
shall terminate prior to the vesting of all Shares purchased under this
Agreement all Unvested Shares shall cease to vest pursuant to this Agreement.

                                       4

<PAGE>

              (e) Notwithstanding section (a) above, should the Purchaser's
death or Disability occur while he or she is a Service Provider,

                  (i) prior to the first anniversary of the Date of Grant, and
the product of (x) the aggregate Sales as shown in the Company's financial
statements for the three full calendar months ended immediately prior to the
date of death or Disability, multiplied by (y) four (4), is equal to or is in
excess of $20 million US Dollars, then and only then, the Company shall, at its
sole option, either cause the Purchaser to vest in one-sixteenth (1/16) of the
total number of Shares subject to this Agreement, or pay to the Purchaser, or to
his personal representatives, $312,500 US Dollars in cash;

                  (ii) at any time between the first and second anniversaries of
the Date of Grant, and Target 1 has been reached, then and only then, the
Purchaser will vest in two-sixteenths (2/16) of the total number of Shares
subject to this Agreement; the Company shall have the option, exercisable upon
written notice within sixty (60) days after the date of death or Disability, to
purchase one-sixteenth (1/16) of the total number of Shares subject to this
Agreement, for an amount equal to the Fair Market Value at the date of death or
Disability; payable to the Purchaser, or his or her lawful representatives, in
three consecutive equal annual installments beginning on the first anniversary
of the date of death or Disability, together with interest at the rate of seven
percent (7%) per annum on the unpaid balance;

                  (iii) at any time between the second and fifth anniversaries
of the Date of Grant, the Company shall have the option, exercisable upon
written notice within sixty (60) days after the date of death or Disability the
Company, to repurchase all vested Shares vested for an amount equal to the Fair
Market Value at the date of death or Disability, payable in four consecutive
equal annual installments beginning on the first anniversary of the date of
death or Disability, together with interest at the rate of seven percent (7%)
per annum on the unpaid balance.

         6.   Put Option.

              (a) Grant of Option. The Company irrevocably grants to the
Purchaser the right (the "Put Option") to require the Company, upon a Change of
Control, to purchase all of the vested and unvested Shares then held by the
Purchaser. The Put Option may be exercised by the Purchaser in respect of all,
and only all, of the vested and unvested Shares, and by delivery of written
notice of exercise of the Put Option, within the later of (i) fifteen (15) days
before the consummation of the Change of Control and (ii) fifteen (15) days
after the Company has given the Purchaser notice of the principal terms of the
Change of Control (the "Option Notice").

"Change of Control" means a sale of all or substantially all of the Company's
assets or a merger, consolidation, reorganization or similar event or sale or
exchange of all of the Company's outstanding capital stock if after such
transaction stockholders of the Company immediately before the transaction own
less than 50% of the voting securities of the purchaser or surviving or
continuing entity.

                                       5

<PAGE>

              (b) Expiration. The Put Option shall be exercisable only if the
Change of Control is consummated prior to the fifth anniversary of the Date of
Grant, provided, that if the Employment Agreement is extended beyond its initial
five-year term, then the Put Option shall be exercisable during the extended
term or terms.

              (c) Determination of Put Price. The consideration to be paid to
the Purchaser upon exercise of the Put Option (the "Put Price") shall be equal
to:

                  (i) the product of five percent (5%) of the Excess Value, at
the time of Change of Control, should such Change of Control occur prior to the
second anniversary of the Date of Grant, multiplied by ten-sixteenths (10/16);

                  (ii) the product of ten percent (10%) of the Excess Value, at
the time of Change of Control, should such Change of Control occur subsequent to
the second and prior to the third anniversary of the Date of Grant, multiplied
by ten-sixteenths (10/16);

                  (iii) the product of sixteen percent (16%) of the Excess
Value, at the time of Change of Control, should such Change of Control occur
subsequent to the third anniversary of the Date of Grant, multiplied by
multiplied by ten-sixteenths (10/16).

"Excess Value" means the excess over $30,000,000 (thirty million) US Dollars of
the Fair Market Value of all equity interests in the Company.

              (d) Put Closing. At the closing of the transaction contemplated by
the exercise of the Put Option, (i) the Purchaser shall deliver to the Company
his or her certificates, representing all his or her vested and unvested Shares,
free and clear from all liens, claims and encumbrances, with duly executed
instruments of assignment attached, and (ii) Purchaser shall make such customary
representations and warranties, as the Company may reasonably request; and (iii)
the Company shall deliver to the Purchaser in cash or by wire transfer the
purchase price of the vested and unvested Shares, provided that if the
consideration received by the stockholders of the Company, with respect to the
Change of Control, is other than cash, the Company shall be entitled to pay the
Purchaser the Put Price by delivery to the Purchaser of the Fair Market Value of
such other consideration, and the Purchaser shall become a party to, and bound
by, any restriction imposed upon the Company's stockholders with respect to the
consideration received in connection with the Change of Control . The Put
Closing shall occur within thirty (30) days of the later of (x) Change of
Control or (y) delivery of the Put Notice to the Company, at the offices of the
Company, or at such other place the Company and the Purchaser mutually agree.

         7.   Restriction on Transfer. Except for the escrow described in
Section 8 of this Agreement or transfer of the Shares to the Company or its
assignees contemplated by this Agreement or the Pledge Agreement (in the form
attached hereto as Exhibit B), none of the Shares or any beneficial interest
therein shall be transferred, encumbered or otherwise disposed of in any way
until the release of such Shares from the Company's Repurchase Option in
accordance with the provisions of this Agreement, other than by will or the laws
of descent and

                                       6

<PAGE>

distribution; provided, however, that Purchaser may transfer shares in
conformance with Section 9(f) of this Agreement.

         8.   Escrow of Shares.

              (a) To ensure the availability for delivery of the Purchaser's
Unvested Shares upon exercise of the Repurchase Option by the Company, the
Purchaser shall, upon execution of this Agreement, deliver and deposit with an
escrow holder designated by the Company (the "Escrow Holder") and reasonably
acceptable to the Purchaser the share certificates representing the Unvested
Shares, together with the Assignment Separate from Certificate (the "Stock
Assignment") duly endorsed in blank, in the form attached hereto as Exhibit D.
The Unvested Shares and Stock Assignment shall be held by the Escrow Holder,
pursuant to the Joint Escrow Instructions of the Company and Purchaser in the
form attached as Exhibit E hereto, until such time as the Company's Repurchase
Option expires.

              (b) The Escrow Holder shall not be liable for any act it may do or
omit to do with respect to holding the Unvested Shares in escrow and while
acting in good faith and in the exercise of its judgment.

              (c) If the Company or any assignee exercises its Repurchase Option
hereunder, the Escrow Holder, upon receipt of written notice of such option
exercise from the proposed transferee, shall take all steps necessary to
accomplish such transfer.

              (d) When the Repurchase Option has been exercised or expires
unexercised, and a portion of the Shares has been released from such Repurchase
Option, the Escrow Holder shall promptly upon request, but not more frequently
than once each year, cause a new certificate to be issued for such released
Shares and shall deliver such certificate to the Company or the Purchaser, as
the case may be.

              (e) Subject to the terms hereof, the Purchaser shall have all the
rights of a shareholder with respect to such Shares while they are held in
escrow, including without limitation, the right to vote the Shares and receive
any cash dividends declared thereon. If, from time to time during the term of
the Company's Repurchase Option, there is (i) any stock dividend, stock split or
other change in the Shares, or (ii) any merger or sale of all or substantially
all of the assets or other acquisition of the Company, any and all new,
substituted or additional securities to which the Purchaser is entitled by
reason of the Purchaser's ownership of the Shares shall be immediately subject
to this escrow, deposited with the Escrow Holder and included thereafter as
"Shares" for purposes of this Agreement and the Company's Repurchase Option.

         9.   Company's Right of First Refusal. Before any Shares held by
Purchaser or any transferee (either being sometimes referred to herein as the
"Holder") may be sold or otherwise transferred (including transfer by gift or
operation of law), the Company or its assignee(s) shall

                                       7

<PAGE>

have a right of first refusal to purchase the Shares on the terms and conditions
set forth in this Section (the "Right of First Refusal").

              (a) Notice of Proposed Transfer. The Holder of the Shares shall
deliver to the Company a written notice (the "Notice") stating: (i) the Holder's
bona fide intention to sell or otherwise transfer such Shares; (ii) the name of
each proposed purchaser or other transferee ("Proposed Transferee"); (iii) the
number of Shares to be transferred to each Proposed Transferee; and (iv) the
bona fide cash price or other consideration for which the Holder proposes to
transfer the Shares (the "Offered Price"), and the Holder shall offer the Shares
at the Offered Price to the Company or its assignee(s).

              (b) Exercise of Right of First Refusal. At any time within thirty
(30) days after receipt of the Notice, the Company and/or its assignee(s) may,
by giving written notice to the Holder, elect to purchase all or part of the
Shares proposed to be transferred to any one or more of the Proposed
Transferees, at the purchase price determined in accordance with subsection (c)
below.

              (c) Purchase Price. The purchase price ("Purchase Price") for the
Shares purchased by the Company or its assignee(s) under this Section shall be
(i) the Offered Price in the case of Shares that are vested or (ii) in the case
of Shares that are Unvested Shares, the lower of the Offered Price or the
Repurchase Price as defined in Section 4(a) hereof. If the Offered Price
includes consideration other than cash, the cash equivalent value of the
non-cash consideration shall be determined by the Board of Directors of the
Company in good faith.

              (d) Payment. Payment of the Purchase Price shall be made, at the
option of the Company or its assignee(s), (i) by cash or check, (ii) by
cancellation of all or a portion of any outstanding indebtedness of the Holder
to the Company (or, in the case of repurchase by an assignee, to the assignee),
or (iii) by any combination thereof within thirty (30) days after receipt of the
Notice or in the manner and at the times set forth in the Notice.

              (e) Holder's Right to Transfer. If Shares proposed in the Notice
to be transferred to a given Proposed Transferee are not purchased by the
Company and/or its assignee(s) as provided in this Section, then the Holder may
sell or otherwise transfer such Shares, that are not repurchased by the Company,
to that Proposed Transferee at the Offered Price or at a higher price, provided
that such sale or other transfer is consummated within one hundred twenty (120)
days after the date of the Notice and provided further that any such sale or
other transfer is effected in accordance with any applicable securities laws and
the Proposed Transferee agrees in writing that the provisions of this Section
shall continue to apply to the Shares in the hands of such Proposed Transferee.
If the Shares described in the Notice are not transferred to the Proposed
Transferee within such period, a new Notice shall be given to the Company, and
the Company and/or its assignees shall again be offered the Right of First
Refusal before any Shares held by the Holder may be sold or otherwise
transferred.

                                       8

<PAGE>

              (f) Exception for Certain Family Transfers. Anything to the
contrary contained in this Section notwithstanding, the transfer of any or all
of the Shares during the Purchaser's lifetime or on the Purchaser's death by
will or intestacy to the Purchaser's Immediate Family or a trust for the benefit
of one or more members of the Purchaser's Immediate Family or to a trust,
partnership, limited liability company, custodianship or other fiduciary account
for the benefit of the Purchaser or one or more members of the Purchaser's
Immediate Family, or the disbursement therefrom to Purchaser or one or more
members of his Immediate Family, shall be exempt from the provisions of this
Section, provided that the Purchaser notifies the Company in writing within
thirty (30) days of said transfer. "Immediate Family" as used herein shall mean
spouse, lineal descendant or antecedent, father, mother, brother or sister. In
such case, the transferee or other recipient shall receive and hold the Shares
so transferred subject to the provisions of this Agreement, including but not
limited to this Section and Section 4, and there shall be no further transfer of
such Shares except in accordance with the terms of this Section.

              (g) Termination of Right of First Refusal. The Right of First
Refusal shall terminate as to any Shares upon the date of the first sale of
Common Stock of the Company to the general public pursuant to a registration
statement filed with and declared effective by the Securities and Exchange
Commission under the 1933 Act.

         10.  Restrictive Legends; Stop-Transfer Orders; Refusal to Transfer.

              (a) Purchaser understands and agrees that the Company shall cause
the legends set forth below or legends substantially equivalent thereto, to be
placed upon any certificate(s) evidencing ownership of the Shares together with
any other legends that may be required by the Company or by applicable state or
federal securities laws:

              THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED
              UNDER THE SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE
              OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR
              HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE ACT OR, IN
              THE OPINION OF COUNSEL SATISFACTORY TO THE ISSUER OF THESE
              SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR
              HYPOTHECATION IS IN COMPLIANCE THEREWITH.

              THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO
              CERTAIN RESTRICTIONS ON TRANSFER, A RIGHT OF FIRST REFUSAL,
              AND A REPURCHASE OPTION HELD BY THE ISSUER OR ITS ASSIGNEE(S)
              AS SET FORTH IN THE RESTRICTED STOCK PURCHASE AGREEMENT
              BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE SHARES, A
              COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE
              ISSUER. SUCH

                                       9

<PAGE>

              TRANSFER RESTRICTIONS, RIGHT OF FIRST REFUSAL AND REPURCHASE
              OPTION ARE BINDING ON TRANSFEREES OF THESE SHARES.

              (b) Stop-Transfer Notices. Purchaser agrees that, in order to
ensure compliance with the restrictions referred to herein, the Company may
issue appropriate "stop transfer" instructions to its transfer agent, if any,
and that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.

              (c) Refusal to Transfer. The Company shall not be required (i)to
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

         11.  Lock-Up Period. Purchaser hereby agrees that, if so requested by
the Company or any representative of the underwriters (the "Managing
Underwriter") in connection with any registration of the offering of any
securities of the Company under the Securities Act, Purchaser (or any transferee
under Section 8 of this Agreement) shall not sell or otherwise transfer any
Shares or other securities of the Company during the 180-day period (or such
shorter period as may be requested in writing by the Managing Underwriter and
agreed to in writing by the Company) (the "Market Standoff Period") following
the effective date of a registration statement of the Company filed under the
Securities Act. Such restriction shall apply only to the first registration
statement of the Company to become effective under the Securities Act that
includes securities to be sold on behalf of the Company to the public in an
underwritten public offering under the Securities Act. The Company may impose
stop-transfer instructions with respect to securities subject to the foregoing
restrictions until the end of such Market Standoff Period.

         12.  Tax Consequences. Set forth below is a brief summary as of the
date of grant of this Stock Purchase Right of some of the federal tax
consequences of exercise of this Stock Purchase Right and disposition of the
Shares. THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS
ARE SUBJECT TO CHANGE.

              (a) Exercise of Stock Purchase Right. Generally, no income will be
recognized by Purchaser in connection with the exercise of the stock purchase
right for shares subject to the Repurchase Option, unless an election under
Section 83(b) of the Code is filed with the Internal Revenue Service within 30
days of the date of exercise of the right to purchase stock. The form for making
this election is attached as Exhibit F hereto. Otherwise, as the Company's
repurchase right lapses, Purchaser will recognize compensation income in an
amount equal to the difference between the Fair Market Value of the stock at the
time the Company's repurchase right lapses and the amount paid for the stock, if
any (the "Spread"). If Purchaser is a Service Provider or former Service
Provider, the Spread will be subject to tax withholding by the Company, and

                                       10

<PAGE>

the Company will be entitled to a tax deduction in the amount at the time the
Purchaser recognizes ordinary income with respect to a Stock Purchase Right.

              (b) Disposition of Shares. Upon disposition of the Shares, any
gain or loss is treated as capital gain or loss. If the Shares are held for more
than one year, any gain realized on disposition of the shares will be treated as
long-term capital gain for federal income tax purposes. Long-term capital gains
are grouped and netted by holding periods. Net capital gains on assets held for
more than 12 months is capped at 20%. Capital losses are allowed in full against
capital gains, and up to $3,000 against other income.

         THE PURCHASER ACKNOWLEDGES THAT IT IS THE PURCHASER'S SOLE
RESPONSIBILITY AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION UNDER SECTION
83(b), EVEN IF THE PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE
THIS FILING ON THE PURCHASER'S BEHALF.

         13.  No Guarantee of Continued Service. PURCHASER ACKNOWLEDGES AND
AGREES THAT THE RELEASE OF SHARES FROM THE REPURCHASE OPTION OF THE COMPANY
PURSUANT TO PARAGRAPH 5 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS SERVICE
PROVIDER AND THE COMPANY ACHIEVING CERTAIN TARGETS (AS DEFINED) (NOT THROUGH THE
ACT OF BEING HIRED OR PURCHASING SHARES HEREUNDER). PURCHASER FURTHER
ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED
HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS
OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING
PERIOD, FOR ANY PERIOD, OR AT ALL.

         14.  Notices. Any notice, demand or request required or permitted to be
given by either the Company or the Purchaser pursuant to the terms of this
Agreement shall be in writing and may be delivered by hand, by nationally
recognized private courier, or by certified mail. Notices delivered by hand or
by nationally recognized private courier shall be deemed given when delivered
personally to the addressee or to the courier, or if given by certified mail
when deposited in the U.S. mail, certified and with postage prepaid, and
addressed to the parties at the addresses of the parties set forth at the end of
this Agreement or such other address as a party may request by notifying the
other in writing.

              Any notice to the Escrow Holder shall be sent to the Company's
address with a copy to the other party not sending the notice.

         15.  No Waiver. Either party's failure to enforce any provision or
provisions of this Agreement shall not in any way be construed as a waiver of
any such provision or provisions, nor prevent that party from thereafter
enforcing each and every other provision of this Agreement. The rights granted
both parties herein are cumulative and shall not constitute a waiver of either
party's right to assert all other legal remedies available to it under the
circumstances.

                                       11

<PAGE>

         16.  Successors and Assigns. The Company may assign any of its rights
under this Agreement to single or multiple assignees, and this Agreement shall
inure to the benefit of the successors and assigns of the Company. Subject to
the restrictions on transfer herein set forth, this Agreement shall be binding
upon Purchaser and his or her heirs, executors, administrators, successors and
assigns.

         17.  Interpretation. Any dispute regarding the interpretation of this
Agreement shall be submitted by Purchaser or by the Company forthwith to the
Administrator which shall review such dispute at its next regular meeting. The
resolution of such a dispute by the Administrator shall be final and binding on
all parties.

         18.  Governing Law; Severability. This Agreement is governed by the
internal substantive laws, but not the choice of law rules, of New York.

         19.  Entire Agreement. The Plan is incorporated herein by reference.
This Agreement (including the exhibits referenced herein), the Plan and the
Investment Representation Statement constitute the entire agreement of the
parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Purchaser with
respect to the subject matter hereof, and may not be modified adversely to the
Purchaser's interest except by means of a writing signed by the Company and
Purchaser.

              By Purchaser's signature below, Purchaser represents that he or
she is familiar with the terms and provisions of the Plan, and hereby accepts
this Agreement subject to all of the terms and provisions thereof. Purchaser has
reviewed the Plan and this Agreement in their entirety, has had an opportunity
to obtain the advice of counsel prior to executing this Agreement and fully
understands all provisions of this Agreement. Purchaser agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions

                                       12

<PAGE>

arising under the Plan or this Agreement. Purchaser further agrees to notify the
Company upon any change in the residence indicated in the Notice of Grant of
Stock Purchase Right.

DIAMOND LAUFFIN                       NEXSAN CORPORATION

     Address:                            Address:

32 South Wendy Drive                  C/o Beechtree Capital, Ltd.
Newbury Park, CA 91320                1 Rockefeller Plaza
                                      Suite 1600
                                      New York, NY 10020

                                      By: /s/ Martin Boddy
                                          ------------------------------
/s/ Diamond Lauffin                       Name Printed: Martin Boddy
----------------------------              Title:
Signature

Diamond Lauffin
----------------------------
Print Name

                                       13

<PAGE>

                                    EXHIBIT B
                                    ---------

                                PLEDGE AGREEMENT

         THE PLEDGE AGREEMENT (the "Agreement"), entered into as of
____________, 2001, by and between Nexsan Corporation ("Secured Party") and
__________ (the "Pledgor").

                              W I T N E S S E T H:

         WHEREAS, Pledgor has purchased from the Secured Party
______________shares ("Shares") of the common stock of Nexsan Corporation, a
Delaware corporation (the "Corporation"), pursuant to the Restricted Stock
Purchase Agreement and exhibits thereto (collectively the "Agreement"), dated
the date hereof between Pledgor and the Secured Party ("Stock Purchase
Agreement"); and

         WHEREAS, Pledgor has agreed to pledge the Shares as security for the
Promissory Note of even date herewith, made by Pledgor to the order of the
Secured Party pursuant to the Stock Purchase Agreement (the "Note").

         NOW, THEREFORE, in consideration of the foregoing and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

         1.   Warranty and Covenant. Pledgor represents and warrants to the
Secured Party that except for the security interest created hereby, and except
for restrictions imposed by the Restricted Stock Purchase Agreement, he owns the
Shares free and clear of all liens, charges and encumbrances and that he has the
unencumbered right to pledge such Shares pursuant to the terms hereof.

         2.   Pledge. As security for the prompt payment and performance when
due (whether at stated maturity, by acceleration or otherwise) of all
indebtedness and all other liabilities and obligations, whether now existing or
hereafter arising, of Pledgor to the Secured Party under or arising out of the
Note (collectively, the "Obligations"), Pledgor hereby delivers, pledges and
assigns to Secured Party and creates in Secured Party a perfected first security
interest in all of Pledgor's right, title and interest in, to and under all of
the Shares, together with (subject to the terms of Section 3 hereof) all rights
and privileges of Pledgor with respect thereto, all proceeds, income and profits
thereof and all property received in addition thereto, in exchange thereof or in
substitution therefor and in any other property or assets of equal value as may
from time to time be substituted by mutual agreement of the parties hereto as
collateral security hereunder (all such property of Pledgor being hereinafter
referred to collectively as the "Collateral").

<PAGE>

         3.   Rights of Pledgor. So long as no Default has occurred and is
continuing (as used, herein, the term "Default" shall mean and include (i) the
failure of Pledgor to perform any of her Obligations when due, (ii) any material
misrepresentation by Pledgor in or with respect to any provision of the
Agreement or the Note, or (iii) any attachment of the Collateral at any time
pursuant to any court order or other legal process), (a) Pledgor shall be
entitled to vote or consent with respect to the Collateral in any manner not
inconsistent with the Agreement or the Note, and (b) all cash distributions with
respect to the Shares shall, anything in Section 2 or elsewhere herein to the
contrary notwithstanding, be the sole and exclusive property of Pledgor.

         4.   Event of Default. In the event of the occurrence of an Event of
Default, as such term is defined in the Note, and the continuation of such Event
of Default uncured beyond any applicable notice or other grace period, Secured
Party may sell or otherwise dispose of the Collateral at a public or private
sale or make other commercially reasonable disposition of the Collateral or any
portion thereof after twenty-one (21) calendar days' notice to the Pledgor. Any
proceeds of the disposition of the Collateral in excess of the then outstanding
Obligations shall promptly be remitted to Pledgor by the Secured Party.

              If any consent, approval or authorization of any state, municipal
or other governmental department, agency or authority should be necessary to
effectuate any sale or other disposition of the Collateral, or any partial
disposition of the Collateral, Pledgor agrees to execute all such applications
and other instruments as may be required in connection with securing any such
consent, approval or authorization, and will otherwise use her reasonable best
efforts to secure the same. Pledgor further agrees to use her reasonable best
efforts (without incurring any additional cost or expense) to secure such sale
or other disposition of the Collateral as the Secured Party may deem necessary
pursuant to the terms of the Agreement

         5.   Additional Rights of the Secured Party. In addition to its rights
and privileges under the Agreement, the Secured Party shall have all the rights,
powers and privileges of a secured party under the Uniform Commercial Code as in
effect in any applicable jurisdiction.

         6.   Binding Agreement. The Agreement shall be construed and
interpreted in accordance with the internal laws of the State of New York
applicable to agreements made and to be performed wholly within the State of New
York. The Agreement, together with all documents referred to herein, constitutes
the entire agreement between the parties with respect to the matters addressed
herein and may not be modified except by a writing executed by Pledgor and the
Secured Party.

         7.   Covenants. The Secured Party covenants that, provided no Default
or Event of Default (as defined in the Note) shall exist and be continuing, it
shall release Shares from the pledge created hereby upon payment of a pro rata
portion of the Note and accrued interest; provided, that such Shares shall be
delivered by Secured Party to the Escrow Holder (as defined in the Stock
Purchase Agreement) to be held and disposed of in accordance with the terms of
the Stock Purchase Agreement.

                                       2

<PAGE>

         8.   Termination. The Agreement shall continue in full force and effect
until all the Obligations shall have been fully and indefeasibly paid in full.
The Collateral shall be delivered to the Escrow Holder upon full payment,
satisfaction and termination of all of the Obligations, to be held and disposed
of in accordance with the terms of the Agreement.

         9.   Further Assurances. Pledgor shall at any time and from time to
time upon the written request of the Secured Party, execute and deliver such
further documents and do such further acts and things as the Secured Party may
reasonably request in order to effect the purposes of the Agreement.

         10.  Severability. If any paragraph herein, or part thereof, shall for
any reason be held or adjudged to be invalid, illegal or unenforceable by any
court of competent jurisdiction, such paragraph or part thereof so adjudicated
invalid, illegal or unenforceable shall be deemed separate, distinct and
independent, and the remainder of the Agreement shall remain in full force and
effect and shall not be affected by such holding or adjudication.

         11.  Successors and Assigns. The Agreement, and the terms and
conditions hereof, shall be binding upon and shall inure to the benefit of the
Pledgor and his or her successors and assigns, and the Secured Party and his or
her successors and assigns; provided that Pledgor may not assign or delegate his
or her obligations hereunder without the prior written consent of the Secured
Party and any purported assignment or delegation by Pledgor of his or her
obligations hereunder in the absence of such written consent shall be void.

         12.  Notices. All notices and other communication provided for herein
shall be in writing and mailed, by registered or certified mail, return receipt
requested, or delivered by overnight courier or by hand, to the intended
recipient at the "Address for Notices" specified below intended recipient's name
on the signature page hereof; or, as to either party, at such other address as
shall hereafter be designated by such party in a notice to the other party.
Except as otherwise provided in the Agreement, all notices and other
communications hereunder shall be deemed to have been duly given when received
by the intended recipient.

         13.  Counterparts. The Agreement may be executed in any number of
counterpart copies, each of which shall be deemed an original, but which
together shall constitute a single instrument.

         14.  Headings. Descriptive headings appearing herein are included
solely for convenience of reference and are not intended to affect the meaning
or construction of any of the provisions of the Agreement.

              [The remainder of this page is intentionally blank.]

                                       3

<PAGE>

         IN WITNESS WHEREOF, the undersigned parties hereto have executed the
Agreement, as of the day and year first above written.

                              -------------------------------------------------

                              ---------------------------, as Pledgor
                                   Address for Notices: ------------------------

                                                        ------------------------

                                   NEXSAN CORPORATION

                                   By:------------------------------------------
                                      Name Printed: -------------------

                                      Title:---------------------------

                                       4

<PAGE>

                                   EXHIBIT B-1
                                   -----------

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

         FOR VALUE RECEIVED the undersigned, __________________________, does
hereby sell, assign and transfer unto ________________ (__________) shares of
the Common Stock of Nexsan Corporation, standing in the name of the undersigned
on the books of said corporation represented by Certificate No._____ herewith
and does hereby irrevocably constitute and appoint
______________________________ to transfer the said stock on the books of the
within named corporation with full power of substitution in the premises.

         This Stock Assignment may be used only in accordance with the Pledge
Agreement between Nexsan Corporation and the undersigned dated
_________________.

Dated: _______________, _____       Signature:______________________________

INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise its
Repurchase Option as set forth in the Agreement, without requiring additional
signatures on the part of the Purchaser.

                                       5

<PAGE>

                                    EXHIBIT C
                                    ---------

                       INVESTMENT REPRESENTATION STATEMENT

PURCHASER:      -------------------------------
COMPANY:        Nexsan Corporation
SECURITY:       COMMON STOCK
AMOUNT:         -------------------- shares
DATE:
                -----------------------

         In connection with the purchase of the above-listed shares of common
stock (the "Securities"), the undersigned Purchaser represents to the Company
the following:

         Purchaser is aware of the Company's business affairs and financial
condition and has acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire the Securities. Purchaser is
acquiring these Securities for investment for Purchaser's own account only and
not with a view to, or for resale in connection with, any "distribution" thereof
within the meaning of the Securities Act of 1933, as amended (the "Securities
Act").

         Purchaser acknowledges and understands that the Securities constitute
"restricted securities" under the Securities Act and have not been registered
under the Securities Act in reliance upon a specific exemption therefrom, which
exemption depends upon, among other things, the bona fide nature of Purchaser's
investment intent as expressed herein. In this connection, Purchaser understands
that, in the view of the Securities and Exchange Commission, the statutory basis
for such exemption may be unavailable if Purchaser's representation was
predicated solely upon a present intention to hold these Securities for the
minimum capital gains period specified under tax statutes, for a deferred sale,
for or until an increase or decrease in the market price of the Securities, or
for a period of one (1) year or any other fixed period in the future. Purchaser
further understands that the Securities must be held indefinitely unless they
are subsequently registered under the Securities Act or an exemption from such
registration is available. Purchaser further acknowledges and understands that
the Company is under no obligation to register the Securities. Purchaser
understands that the certificate evidencing the Securities will be imprinted
with a legend which prohibits the transfer of the Securities unless they are
registered or such registration is not required in the opinion of counsel
satisfactory to the Company, a legend prohibiting their transfer without the
consent of the Commissioner of Corporations of the State of Delaware and any
other legend required under applicable state securities laws.

         Purchaser is familiar with the provisions of Rule 701 and Rule 144,
each promulgated under the Securities Act, which, in substance, permit limited
public resale of "restricted securities" acquired, directly or indirectly from
the issuer thereof, in a non-public offering subject to the satisfaction of
certain conditions. Rule 701 provides that if the issuer qualifies under Rule
701 at the time of the grant of the Stock Purchase Right to the Purchaser, the
exercise will be exempt from

                                       1

<PAGE>

registration under the Securities Act. In the event the Company becomes subject
to the reporting requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, ninety (90) days thereafter (or such longer period as any market
stand-off agreement may require) the Securities exempt under Rule 701 may be
resold, subject to the satisfaction of certain of the conditions specified by
Rule 144, including: (1) the resale being made through a broker in an
unsolicited "broker's transaction" or in transactions directly with a market
maker (as said term is defined under the Securities Exchange Act of 1934); and,
in the case of an affiliate, (2) the availability of certain public information
about the Company, (3) the amount of Securities being sold during any three (3)
month period not exceeding the limitations specified in Rule 144(e), and (4) the
timely filing of a Form 144, if applicable.

         In the event that the Company does not qualify under Rule 701 at the
time of grant of the Stock Purchase Right, then the Securities may be resold in
certain limited circumstances subject to the provisions of Rule 144, which
requires the resale to occur not less than one (1) year after the later of the
date the Securities were sold by the Company or the date the Securities were
sold by an affiliate of the Company, within the meaning of Rule 144; and, in the
case of acquisition of the Securities by an affiliate, or by a non-affiliate who
subsequently holds the Securities less than two (2) years, the satisfaction of
the conditions set forth in sections (1), (2), (3) and (4) of the paragraph
immediately above.

         Purchaser further understands that in the event all of the applicable
requirements of Rule 701 or 144 are not satisfied, registration under the
Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rules 144
and 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rules 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such
persons and their respective brokers who participate in such transactions do so
at their own risk. Purchaser understands that no assurances can be given that
any such other registration exemption will be available in such event.

Signature of Purchaser:

--------------------------------

Print Name:--------------------

Date: ------------------------

                                       2

<PAGE>

                                   EXHIBIT D
                                   ---------

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

         FOR VALUE RECEIVED, the undersigned, __________________________, does
hereby sell, assign and transfer unto ________________ (__________) shares of
the Common Stock of Nexsan Corporation, standing in the name of the undersigned
on the books of said corporation represented by Certificate No._____ herewith
and does hereby irrevocably constitute and appoint
______________________________ to transfer the said stock on the books of the
within named corporation with full power of substitution in the premises.

         This Stock Assignment may be used only in accordance with the
Restricted Stock Purchase Agreement between Nexsan Corporation and the
undersigned dated ______________, ____.

Dated: _______________, _____       Signature:______________________________

INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise its
Repurchase Option as set forth in the Agreement, without requiring additional
signatures on the part of the Purchaser.

                                       1

<PAGE>

                                    EXHIBIT E
                                    ---------

                            JOINT ESCROW INSTRUCTIONS

                                                    -------------------, -----
Mr. --------------------
Secretary, Nexsan Corporation

----------------------------

----------------------------

Dear Sir:

         As Escrow Agent for both Nexsan Corporation, a Delaware corporation
(the "Company"), and the undersigned purchaser of stock of the Company (the
"Purchaser"), you are hereby authorized and directed to hold the documents
delivered to you pursuant to the terms of that certain Restricted Stock Purchase
Agreement ("Agreement") between the Company and the undersigned, in accordance
with the following instructions:

         a.   In the event the Company and/or any assignee of the Company
(referred to collectively for convenience herein as the "Company") exercises the
Company's repurchase option set forth in the Agreement (the "Repurchase
Option"), the Company shall give to Purchaser and you a written notice
specifying the number of shares of stock to be purchased, the purchase price,
and the time for a closing hereunder at the principal office of the Company.
Purchaser and the Company hereby irrevocably authorize and direct you to close
the transaction contemplated by such notice in accordance with the terms of said
notice.

         b.   At the closing, you are directed (i) to date the stock assignments
necessary for the transfer in question, (ii) to fill in the number of shares
being transferred, and (iii) to deliver same, together with the certificate
evidencing the shares of stock to be transferred, to the Company or its
assignee, against the simultaneous delivery to you of the purchase price (by
cash, a check, or some combination thereof) for the number of shares of stock
being purchased pursuant to the exercise of the Repurchase Option.

         c.   Purchaser irrevocably authorizes the Company to deposit with you
any certificates evidencing shares of stock to be held by you hereunder and any
additions to and substitutions for said shares as defined in the Agreement.
Purchaser does hereby irrevocably constitute and appoint you as Purchaser's
attorney-in-fact and agent for the term of this escrow to execute with respect
to such securities all documents necessary or appropriate to make such
securities negotiable and to complete any transaction herein contemplated,
including but not limited to the filing with any applicable state blue sky
authority of any required applications for consent to, or notice of transfer of,
the securities. Subject to the provisions of this paragraph (c), Purchaser shall
exercise all rights and privileges of a shareholder of the Company while the
stock is held by you.

                                       1

<PAGE>

         d.   Once per calendar year and upon termination of this escrow, unless
the Repurchase Option has been exercised, you will deliver to Purchaser a
certificate or certificates representing so many shares of stock as are not then
subject to the Repurchase Option. Within ninety (90) days after cessation of
Purchaser's continuous employment by or services to the Company, or any parent
or subsidiary of the Company, you will deliver to Purchaser a certificate or
certificates representing the aggregate number of shares held or issued pursuant
to the Agreement and not purchased by the Company or its assignees pursuant to
exercise of the Repurchase Option.

         e.   If at the time of termination of this escrow you should have in
your possession any documents, securities, or other property belonging to
Purchaser, you shall deliver all of the same to Purchaser and shall be
discharged of all further obligations hereunder.

         f.   Your duties hereunder may be altered, amended, modified or revoked
only by a writing signed by all of the parties hereto.

         g.   You shall be obligated only for the performance of such duties as
are specifically set forth herein and may rely and shall be protected in relying
or refraining from acting on any instrument reasonably believed by you to be
genuine and to have been signed or presented by the proper party or parties. You
shall not be personally liable for any act you may do or omit to do hereunder as
Escrow Agent or as attorney-in-fact for Purchaser while acting in good faith,
and any act done or omitted by you pursuant to the advice of your own attorneys
shall be conclusive evidence of such good faith.

         h.   You are hereby expressly authorized to disregard any and all
warnings given by any of the parties hereto or by any other person or
corporation, excepting only orders or process of courts of law and are hereby
expressly authorized to comply with and obey orders, judgments or decrees of any
court. In case you obey or comply with any such order, judgment or decree, you
shall not be liable to any of the parties hereto or to any other person, firm or
corporation by reason of such compliance, notwithstanding any such order,
judgment or decree being subsequently reversed, modified, annulled, set aside,
vacated or found to have been entered without jurisdiction.

         i.   You shall not be liable in any respect on account of the identity,
authorities or rights of the parties executing or delivering or purporting to
execute or deliver the Agreement or any documents or papers deposited or called
for hereunder.

         j.   You shall be entitled to employ such legal counsel and other
experts as you may deem necessary properly to advise you in connection with your
obligations hereunder, may rely upon the advice of such counsel, and may pay
such counsel reasonable compensation therefor.

         k.   Your responsibilities as Escrow Agent hereunder shall terminate if
you shall cease to be an officer or agent of the Company or if you shall resign
by written notice to each party. In the event of any such termination, the
Company shall appoint a successor Escrow Agent.

                                       2

<PAGE>

         l.   If you reasonably require other or further instruments in
connection with these Joint Escrow Instructions or obligations in respect
hereto, the necessary parties hereto shall join in furnishing such instruments.

         m.   It is understood and agreed that should any dispute arise with
respect to the delivery and/or ownership or right of possession of the
securities held by you hereunder, you are authorized and directed to retain in
your possession without liability to anyone all or any part of said securities
until such disputes shall have been settled either by mutual written agreement
of the parties concerned or by a final order, decree or judgment of a court of
competent jurisdiction after the time for appeal has expired and no appeal has
been perfected, but you shall be under no duty whatsoever to institute or defend
any such proceedings.

         n.   Any notice required or permitted hereunder shall be given in
writing and shall be deemed effectively given upon personal delivery or upon
deposit in the United States Post Office, by registered or certified mail with
postage and fees prepaid, addressed to each of the other parties thereunto
entitled at the following addresses or at such other addresses as a party may
designate by ten (10) days' advance written notice to each of the other parties
hereto.

                         COMPANY:         Nexsan Corporation

                                          --------------------

                                          --------------------

                         PURCHASER:       --------------------

                                          --------------------

                                          --------------------

                         ESCROW AGENT:    --------------------

                                          --------------------

                                          --------------------

                                          --------------------

         o.   By signing these Joint Escrow Instructions, you become a party
hereto only for the purpose of said Joint Escrow Instructions; you do not become
a party to the Agreement.

         p.   This instrument shall be binding upon and inure to the benefit of
the parties hereto, and their respective successors and permitted assigns.

                                       3

<PAGE>

         q.   The Restricted Stock Purchase Agreement is incorporated
herein by reference. These Joint Escrow Instructions, the 2001 Stock Plan, and
the Restricted Stock Purchase Agreement (including the exhibits referenced
therein) constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Escrow Agent, the Purchaser and the Company with respect to
the subject matter hereof, and

                                       3

<PAGE>

may not be modified except by means of a writing signed by the Escrow Agent, the
Purchaser and the Company.

         r.   These Joint Escrow Instructions shall be governed by, and
construed and enforced in accordance with, the laws of the State of New York.

                                    Very truly yours,

                                    Nexsan Corporation

                                    By:
                                       ----------------------------------------
                                       Printed Name:
                                                    -------------------
                                       Title:
                                             --------------------------

                                    PURCHASER:

                                    -------------------------------------------
                                    (Signature)

                                    -------------------------------------------
                                    (Typed or Printed Name)

ESCROW AGENT:

-------------------------------

-------------------------------

                                       4

<PAGE>

                                    EXHIBIT F
                                    ---------

                          ELECTION UNDER SECTION 83(b)

                      OF THE INTERNAL REVENUE CODE OF 1986

         The undersigned taxpayer hereby elects, pursuant to the
above-referenced Federal Tax Code, to include in taxpayer's gross income for the
current taxable year, the amount of any compensation taxable to taxpayer in
connection with his receipt of the property described below:

         a.   The name, address, taxpayer identification number and taxable year
of the undersigned are as follows:

              NAME:
              ADDRESS:

              IDENTIFICATION NO.:

              TAXABLE YEAR:     2001

         b.   The property with respect to which the election is made is
described as follows: ___________________shares (the "Shares") of the Common
Stock of Nexsan Corporation (the "Company").

         c.   The date on which the property was transferred is: ________, 2001.

         d.   The property is subject to the following restrictions: The Shares
may be repurchased by the Company, or its assignee, on certain events. This
repurchase right lapses with regard to a portion of the Shares based on the
achievement by the Company of certain performance targets while the undersigned
is a service provider of the Company.

         e.   The fair market value at the time of transfer, determined without
regard to any restriction other than a restriction which by its terms will never
lapse, of such property is:

$ ____________ per share.

         f.       The amount (if any) paid for such property is:
$ ____________per share.

         The undersigned has submitted a copy of this statement to the person
for whom the services were performed in connection with the undersigned's
receipt of the above-described property. The transferee of such property is the
person performing the services in connection with the transfer of said property.

                                       1

<PAGE>

         The undersigned understands that the foregoing election may not be
revoked except with the consent of the Commissioner.

Dated: --------------------,---------

-------------------------------, Taxpayer

Printed Name: ---------------------------------

                                       2<PAGE>

                               NEXSAN CORPORATION

                       RESTRICTED STOCK PURCHASE AGREEMENT

     Unless otherwise defined herein, capitalized terms defined in the 2001
Stock Plan (the "Plan") of Nexsan Corporation (the "Company") shall have the
same meanings when used in this Restricted Stock Purchase Agreement (the
"Agreement").

I.   NOTICE OF GRANT OF STOCK PURCHASE RIGHT

     JAMES MOLENDA (the "Purchaser")

     You have been granted the right to purchase Common Stock of the Company,
subject to the terms and conditions of this Agreement (the "Agreement"), as
follows:

     Grant Number                              2
                                               -
     Date of Grant                             ------------------

     Exercise Price Per Share                  $0.66
                                               -----
     Total Number of Shares Subject to This
     Stock Purchase Right ("Shares")           1,200,000
                                               ------------------

Non-Transferability of Stock Purchase Right.

     This Stock Purchase Right may not be transferred in any manner other than
by will or by the laws of descent or distribution and may be exercised during
the lifetime of Purchaser only by Purchaser. The terms of the Plan and this
Agreement shall be binding upon the executors, administrators, heirs, successors
and assigns of the Purchaser.

II.  AGREEMENT

     1. Sale of Stock. The Company hereby agrees to sell to the Purchaser, and
the Purchaser hereby agrees to purchase the number of Shares set forth above in
the Notice of Grant of Stock Purchase Right, at the exercise price per share set
forth in the Notice of Grant of Stock Purchase Right (the "Exercise Price"), and
subject to the terms and conditions of the Plan, which is incorporated herein by
reference. Subject to Section 14(c) of the Plan, in the event of a conflict
between the terms and conditions of the Plan and this Agreement, the terms and
conditions of the Plan shall prevail.

     2. Payment of Purchase Price. Purchaser herewith (i) delivers to the
Company the aggregate Exercise Price for the Shares by promissory note ("Note")
in the form of Exhibit A hereto, (ii) pledges the Shares to the Company to
secure the Note pursuant to a Pledge

<PAGE>

Agreement in the form of Exhibit B attached hereto and (iii) assigns the Shares
pursuant to an Assignment Separate From Certificate in the form of Exhibit B-1.

     3. Purchaser's Representations. In the event the Shares have not been
registered under the Securities Act of 1933, as amended, at the time this Stock
Purchase Right is exercised, the Purchaser shall, if required by the Company,
concurrently with the exercise of all or any portion of this Stock Purchase
Right, deliver to the Company his or her Investment Representation Statement in
the form attached hereto as Exhibit C.

     4. Repurchase Option.

        (a) In the event the Purchaser's continuous status as an employee and/or
independent contractor (collectively "Service Provider") terminates for any or
no reason (including death or Disability), the Company shall, upon the date of
such termination (as reasonably fixed and determined by the Company), have an
irrevocable, exclusive option (the "Repurchase Option") for a period of sixty
(60) days from such date to repurchase up to that number of shares which
constitute the Unvested Shares (as defined in Section 5) at the Exercise Price
per share, plus interest at the rate of interest set forth in the Note (the
"Repurchase Price").

        (b) The Repurchase Option shall be exercised by the Company by
delivering written notice to the Purchaser or the Purchaser's executor (with a
copy to the Escrow Holder (as defined in Section 8)) and, at the Company's
option, (i) by delivering to the Purchaser or the Purchaser's executor a check
in the amount of the aggregate Repurchase Price, or (ii) by the Company
canceling an amount of the Purchaser's indebtedness to the Company equal to the
aggregate Repurchase Price, or (iii) by a combination of (i) and (ii) so that
the combined payment and cancellation of indebtedness equals such aggregate
Repurchase Price. Upon delivery of such notice and the payment of the aggregate
Repurchase Price in any of the ways described above, the Company shall become
the legal and beneficial owner of the Unvested Shares being repurchased and all
rights and interests therein or relating thereto, and the Company shall have the
right to retain and transfer to its own name the number of Unvested Shares being
repurchased by the Company.

        (c) Whenever the Company shall have the right to repurchase the Unvested
Shares hereunder, the Company may designate and assign one or more employees,
officers, directors or shareholders of the Company or other persons or
organizations to exercise all or a part of the Company's Repurchase Option to
purchase all or a part of the Unvested Shares. If the Fair Market Value of the
Unvested Shares to be repurchased on the date of such designation or assignment
(the "Repurchase FMV") exceeds the aggregate Repurchase Price of the Unvested
Shares, then each such designee or assignee shall pay the Company cash equal to
the difference between the Repurchase FMV and the aggregate Repurchase Price of
Unvested Shares to be purchased.

                                      -2-
<PAGE>

        (d) If the Company or its assignee does not elect to exercise the
Repurchase Option conferred above by giving the requisite notice within sixty
(60) days following Purchaser's termination as a Service Provider, the
Repurchase Option shall terminate.

     5. Release of Shares From Repurchase Option (Vesting).

        (a) Shares purchased pursuant to this Agreement shall be released from
the Repurchase Option (sometimes hereafter referred to as "vest" or "vesting")
not earlier than the second anniversary of the Date of Grant. Notwithstanding
anything to the contrary in this Agreement, Shares not vested before December
31, 2005 shall never thereafter vest and shall, subject to Section 4(d) above,
always remain subject to the Repurchase Option. The determination of whether any
Shares shall vest shall be made as of the last day of each month ending on or
after the second anniversary of the Date of Grant and on or before the fifth
anniversary of the Date of Grant based upon on the respective amounts (the
"Target") of Sales (defined below) achieved by the Company during the Rolling
Period (defined below) ended on such day. In the event that the term of the
Employment Agreement, dated as of the date hereof, between the Purchaser and the
Company (the "Employment Agreement") is extended beyond the initial five-year
term, then the determination of whether any Shares vest shall be made as of the
last day of each month during such extended term or terms. The number of Shares
(expressed in one-sixteenth (1/16) denominations of the total number of Shares
subject to this Agreement) in which Purchaser shall vest is set forth
immediately to the left of the corresponding Target. The Company shall be
considered to have achieved a Target if Sales of the Company for any Rolling
Period equal or exceed the amount thereof set forth in the same row as the
Target in the table below. The Purchaser shall be entitled to vest in the number
of Shares set forth to the left of the highest Target achieved. Once vested,
Shares shall not cease to be vested even if the Company fails to achieve a
Target that was achieved in a prior Rolling Period. For purposes of this Section
5, the Date of Grant shall be deemed to be the January 1, 2001.

Illustration: upon the Company achieving Sales of $70,000,000 (i.e., Target 1)
for a Rolling Period, the Purchaser will vest in two-sixteenths (2/16) of the
total number of Shares subject to this Agreement, at the close of such Rolling
Period (provided, however, that the close of such Rolling Period is after the
second anniversary of the Agreement). Should the Company achieve Sales of
$150,000,000 (i.e., Target 4) for a subsequent Rolling Period, the Purchaser
will vest in an additional four-sixteenths (4/16) of the total number of Shares
subject to this Agreement, so as to be vested on a cumulative basis in
six-sixteenths (6/16) of the total number of Shares subject to this Agreement,
at the close of the subsequent Rolling Period (provided, however, that the close
of such subsequent Rolling Period is after the second anniversary of this
Agreement).

                                      -3-
<PAGE>

--------------------------------------------------------------------------------

     Stock to Vest      Target      Sales ('000s)      Cumulative
                                                      Vested Stock

                        ----------------------------------------------
         2/16           Target 1       $70,000            2/16
                        ----------------------------------------------
         1/16           Target 2      $110,000            3/16
                        ----------------------------------------------
         1/16           Target 3      $130,000            4/16
                        ----------------------------------------------
         2/16           Target 4      $150,000            6/16
                        ----------------------------------------------
         1/16           Target 5      $170,000            7/16
                        ----------------------------------------------
         1/16           Target 6      $180,000            8/16
                        ----------------------------------------------
         1/16           Target 7      $190,000            9/16
                        ----------------------------------------------
         3/16           Target 8      $200,000           12/16
                        ----------------------------------------------
         1/16           Target 9      $225,000           13/16
                        ----------------------------------------------
         1/16           Target 10     $250,000           14/16
                        ----------------------------------------------
         1/16           Target 11     $275,000           15/16
                        ----------------------------------------------
         1/16           Target 12     $300,000           16/16
                        ----------------------------------------------

         Total Stock to Vest                              100%

--------------------------------------------------------------------------------

"Rolling Period" means, as of the last day of any month beginning on the second
anniversary of the Date of Grant and ending before the later of the (i) fifth
anniversary of the Date of Grant, or (ii) the extended term of the Employment
Agreement, the immediately preceding twelve (12) month period ending on such
day.

"Sales" means the total amount of sales, net of returns, discounts and
allowances, of the Company .

All determinations of Sales shall be based on the regularly prepared financial
statements of the Company, which need not be audited; provided, that if an audit
of the Company's financial statements results in a change to any unaudited
statements, the audited statements shall control for purposes of this Agreement.

        (b) Any of the Shares which have not yet been released from the
Company's Repurchase Option are referred to herein as "Unvested Shares."

        (c) The Shares which have been released from the Company's Repurchase
Option shall be delivered to the Purchaser at the Purchaser's request (see
Section 8).

        (d) In the event that Purchaser's relationship as a Service Provider
with the Company, and /or any of its Parent or Subsidiary companies, shall
terminate prior to the vesting of all Shares purchased under this Agreement all
Unvested Shares shall cease to vest pursuant to this Agreement.

                                      -4-
<PAGE>

        (e) Notwithstanding section (a) above, should the Purchaser's death or
Disability occur while he or she is a Service Provider,

            (i) prior to the first anniversary of the Date of Grant, and the
product of (x) the aggregate Sales as shown in the Company's financial
statements for the three full calendar months ended immediately prior to the
date of death or Disability, multiplied by (y) four (4), is equal to or is in
excess of $20 million US Dollars, then and only then, the Company shall, at its
sole option, either cause the Purchaser to vest in one-sixteenth (1/16) of the
total number of Shares subject to this Agreement, or pay to the Purchaser, or to
his personal representatives, $187,500 US Dollars in cash;

            (ii) at any time between the first and second anniversaries of the
Date of Grant, and Target 1 has been reached, then and only then, the Purchaser
will vest in two-sixteenths (2/16) of the total number of Shares subject to this
Agreement; the Company shall have the option, exercisable upon written notice
within sixty (60) days after the date of death or Disability, to purchase
one-sixteenth (1/16) of the total number of Shares subject to this Agreement,
for an amount equal to the Fair Market Value at the date of death or Disability;
payable to the Purchaser, or his or her lawful representatives, in three
consecutive equal annual installments beginning on the first anniversary of the
date of death or Disability, together with interest at the rate of seven percent
(7%) per annum on the unpaid balance;

            (iii) at any time between the second and fifth anniversaries of the
Date of Grant, the Company shall have the option, exercisable upon written
notice within sixty (60) days after the date of death or Disability the Company,
to repurchase all vested Shares vested for an amount equal to the Fair Market
Value at the date of death or Disability, payable in four consecutive equal
annual installments beginning on the first anniversary of the date of death or
Disability, together with interest at the rate of seven percent (7%) per annum
on the unpaid balance.

     6. Put Option.

        (a) Grant of Option. The Company irrevocably grants to the Purchaser the
right (the "Put Option") to require the Company, upon a Change of Control, to
purchase all of the vested and unvested Shares then held by the Purchaser. The
Put Option may be exercised by the Purchaser in respect of all, and only all, of
the vested and unvested Shares, and by delivery of written notice of exercise of
the Put Option, within the later of (i) fifteen (15) days before the
consummation of the Change of Control and (ii) fifteen (15) days after the
Company has given the Purchaser notice of the principal terms of the Change of
Control (the "Option Notice").

"Change of Control" means a sale of all or substantially all of the Company's
assets or a merger, consolidation, reorganization or similar event or sale or
exchange of all of the Company's outstanding capital stock if after such
transaction stockholders of the Company immediately before the transaction own
less than 50% of the voting securities of the purchaser or surviving or
continuing entity.

                                      -5-
<PAGE>

        (b) Expiration. The Put Option shall be exercisable only if the Change
of Control is consummated prior to the fifth anniversary of the Date of Grant,
provided, that if the Employment Agreement is extended beyond its initial
five-year term, then the Put Option shall be exercisable during the extended
term or terms.

        (c) Determination of Put Price. The consideration to be paid to the
Purchaser upon exercise of the Put Option (the "Put Price") shall be equal to:

            (i) the product of five percent (5%) of the Excess Value, at the
time of Change of Control, should such Change of Control occur prior to the
second anniversary of the Date of Grant, multiplied by six-sixteenths (6/16);

            (ii) the product of ten percent (10%) of the Excess Value, at the
time of Change of Control, should such Change of Control occur subsequent to the
second and prior to the third anniversary of the Date of Grant, multiplied by
six-sixteenths (6/16);

            (iii) the product of sixteen percent (16%) of the Excess Value, at
the time of Change of Control, should such Change of Control occur subsequent to
the third anniversary of the Date of Grant, multiplied by multiplied by
six-sixteenths (6/16).

"Excess Value" means the excess over $30,000,000 (thirty million) US Dollars of
the Fair Market Value of all equity interests in the Company.

        (d) Put Closing. At the closing of the transaction contemplated by the
exercise of the Put Option, (i) the Purchaser shall deliver to the Company his
or her certificates, representing all his or her vested and unvested Shares,
free and clear from all liens, claims and encumbrances, with duly executed
instruments of assignment attached, and (ii) Purchaser shall make such customary
representations and warranties, as the Company may reasonably request; and (iii)
the Company shall deliver to the Purchaser in cash or by wire transfer the
purchase price of the vested and unvested Shares, provided that if the
consideration received by the stockholders of the Company, with respect to the
Change of Control, is other than cash, the Company shall be entitled to pay the
Purchaser the Put Price by delivery to the Purchaser of the Fair Market Value of
such other consideration, and the Purchaser shall become a party to, and bound
by, any restriction imposed upon the Company's stockholders with respect to the
consideration received in connection with the Change of Control . The Put
Closing shall occur within thirty (30) days of the later of (x) Change of
Control or (y) delivery of the Put Notice to the Company, at the offices of the
Company, or at such other place the Company and the Purchaser mutually agree.

     7. Restriction on Transfer. Except for the escrow described in Section 8 of
this Agreement or transfer of the Shares to the Company or its assignees
contemplated by this Agreement or the Pledge Agreement (in the form attached
hereto as Exhibit B), none of the Shares or any beneficial interest therein
shall be transferred, encumbered or otherwise disposed of in any way until the
release of such Shares from the Company's Repurchase Option in accordance with
the provisions of this Agreement, other than by will or the laws of descent and

                                      -6-
<PAGE>

distribution; provided, however, that Purchaser may transfer shares in
conformance with Section 9(f) of this Agreement.

     8. Escrow of Shares.

        (a) To ensure the availability for delivery of the Purchaser's Unvested
Shares upon exercise of the Repurchase Option by the Company, the Purchaser
shall, upon execution of this Agreement, deliver and deposit with an escrow
holder designated by the Company (the "Escrow Holder") and reasonably acceptable
to the Purchaser the share certificates representing the Unvested Shares,
together with the Assignment Separate from Certificate (the "Stock Assignment")
duly endorsed in blank, in the form attached hereto as Exhibit D. The Unvested
Shares and Stock Assignment shall be held by the Escrow Holder, pursuant to the
Joint Escrow Instructions of the Company and Purchaser in the form attached as
Exhibit E hereto, until such time as the Company's Repurchase Option expires.

        (b) The Escrow Holder shall not be liable for any act it may do or omit
to do with respect to holding the Unvested Shares in escrow and while acting in
good faith and in the exercise of its judgment.

        (c) If the Company or any assignee exercises its Repurchase Option
hereunder, the Escrow Holder, upon receipt of written notice of such option
exercise from the proposed transferee, shall take all steps necessary to
accomplish such transfer.

        (d) When the Repurchase Option has been exercised or expires
unexercised, and a portion of the Shares has been released from such Repurchase
Option, the Escrow Holder shall promptly upon request, but not more frequently
than once each year, cause a new certificate to be issued for such released
Shares and shall deliver such certificate to the Company or the Purchaser, as
the case may be.

        (e) Subject to the terms hereof, the Purchaser shall have all the rights
of a shareholder with respect to such Shares while they are held in escrow,
including without limitation, the right to vote the Shares and receive any cash
dividends declared thereon. If, from time to time during the term of the
Company's Repurchase Option, there is (i) any stock dividend, stock split or
other change in the Shares, or (ii) any merger or sale of all or substantially
all of the assets or other acquisition of the Company, any and all new,
substituted or additional securities to which the Purchaser is entitled by
reason of the Purchaser's ownership of the Shares shall be immediately subject
to this escrow, deposited with the Escrow Holder and included thereafter as
"Shares" for purposes of this Agreement and the Company's Repurchase Option.

     9. Company's Right of First Refusal. Before any Shares held by Purchaser or
any transferee (either being sometimes referred to herein as the "Holder") may
be sold or otherwise transferred (including transfer by gift or operation of
law), the Company or its assignee(s) shall

                                      -7-
<PAGE>

have a right of first refusal to purchase the Shares on the terms and conditions
set forth in this Section (the "Right of First Refusal").

        (a) Notice of Proposed Transfer. The Holder of the Shares shall deliver
to the Company a written notice (the "Notice") stating: (i) the Holder's bona
fide intention to sell or otherwise transfer such Shares; (ii) the name of each
proposed purchaser or other transferee ("Proposed Transferee"); (iii) the number
of Shares to be transferred to each Proposed Transferee; and (iv) the bona fide
cash price or other consideration for which the Holder proposes to transfer the
Shares (the "Offered Price"), and the Holder shall offer the Shares at the
Offered Price to the Company or its assignee(s).

        (b) Exercise of Right of First Refusal. At any time within thirty (30)
days after receipt of the Notice, the Company and/or its assignee(s) may, by
giving written notice to the Holder, elect to purchase all or part of the Shares
proposed to be transferred to any one or more of the Proposed Transferees, at
the purchase price determined in accordance with subsection (c) below.

        (c) Purchase Price. The purchase price ("Purchase Price") for the Shares
purchased by the Company or its assignee(s) under this Section shall be (i) the
Offered Price in the case of Shares that are vested or (ii) in the case of
Shares that are Unvested Shares, the lower of the Offered Price or the
Repurchase Price as defined in Section 4(a) hereof. If the Offered Price
includes consideration other than cash, the cash equivalent value of the
non-cash consideration shall be determined by the Board of Directors of the
Company in good faith.

        (d) Payment. Payment of the Purchase Price shall be made, at the option
of the Company or its assignee(s), (i) by cash or check, (ii) by cancellation of
all or a portion of any outstanding indebtedness of the Holder to the Company
(or, in the case of repurchase by an assignee, to the assignee), or (iii) by any
combination thereof within thirty (30) days after receipt of the Notice or in
the manner and at the times set forth in the Notice.

        (e) Holder's Right to Transfer. If Shares proposed in the Notice to be
transferred to a given Proposed Transferee are not purchased by the Company
and/or its assignee(s) as provided in this Section, then the Holder may sell or
otherwise transfer such Shares, that are not repurchased by the Company, to that
Proposed Transferee at the Offered Price or at a higher price, provided that
such sale or other transfer is consummated within one hundred twenty (120) days
after the date of the Notice and provided further that any such sale or other
transfer is effected in accordance with any applicable securities laws and the
Proposed Transferee agrees in writing that the provisions of this Section shall
continue to apply to the Shares in the hands of such Proposed Transferee. If the
Shares described in the Notice are not transferred to the Proposed Transferee
within such period, a new Notice shall be given to the Company, and the Company
and/or its assignees shall again be offered the Right of First Refusal before
any Shares held by the Holder may be sold or otherwise transferred.

                                      -8-
<PAGE>

        (f) Exception for Certain Family Transfers. Anything to the contrary
contained in this Section notwithstanding, the transfer of any or all of the
Shares during the Purchaser's lifetime or on the Purchaser's death by will or
intestacy to the Purchaser's Immediate Family or a trust for the benefit of one
or more members of the Purchaser's Immediate Family or to a trust, partnership,
limited liability company, custodianship or other fiduciary account for the
benefit of the Purchaser or one or more members of the Purchaser's Immediate
Family, or the disbursement therefrom to Purchaser or one or more members of his
Immediate Family, shall be exempt from the provisions of this Section, provided
that the Purchaser notifies the Company in writing within thirty (30) days of
said transfer. "Immediate Family" as used herein shall mean spouse, lineal
descendant or antecedent, father, mother, brother or sister. In such case, the
transferee or other recipient shall receive and hold the Shares so transferred
subject to the provisions of this Agreement, including but not limited to this
Section and Section 4, and there shall be no further transfer of such Shares
except in accordance with the terms of this Section.

        (g) Termination of Right of First Refusal. The Right of First Refusal
shall terminate as to any Shares upon the date of the first sale of Common Stock
of the Company to the general public pursuant to a registration statement filed
with and declared effective by the Securities and Exchange Commission under the
1933 Act.

    10. Restrictive Legends; Stop-Transfer Orders; Refusal to Transfer.

        (a) Purchaser understands and agrees that the Company shall cause the
legends set forth below or legends substantially equivalent thereto, to be
placed upon any certificate(s) evidencing ownership of the Shares together with
any other legends that may be required by the Company or by applicable state or
federal securities laws:

        THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
        SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE OFFERED, SOLD OR
        OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL
        REGISTERED UNDER THE ACT OR, IN THE OPINION OF COUNSEL SATISFACTORY TO
        THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR
        HYPOTHECATION IS IN COMPLIANCE THEREWITH.

        THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN
        RESTRICTIONS ON TRANSFER, A RIGHT OF FIRST REFUSAL, AND A REPURCHASE
        OPTION HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE
        RESTRICTED STOCK PURCHASE AGREEMENT BETWEEN THE ISSUER AND THE ORIGINAL
        HOLDER OF THESE SHARES, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL
        OFFICE OF THE ISSUER. SUCH

                                      -9-
<PAGE>

        TRANSFER RESTRICTIONS, RIGHT OF FIRST REFUSAL AND REPURCHASE OPTION ARE
        BINDING ON TRANSFEREES OF THESE SHARES.

        (b) Stop-Transfer Notices. Purchaser agrees that, in order to ensure
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfer agent, if any, and
that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.

        (c) Refusal to Transfer. The Company shall not be required (i)to
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

     11. Lock-Up Period. Purchaser hereby agrees that, if so requested by the
Company or any representative of the underwriters (the "Managing Underwriter")
in connection with any registration of the offering of any securities of the
Company under the Securities Act, Purchaser (or any transferee under Section 8
of this Agreement) shall not sell or otherwise transfer any Shares or other
securities of the Company during the 180-day period (or such shorter period as
may be requested in writing by the Managing Underwriter and agreed to in writing
by the Company) (the "Market Standoff Period") following the effective date of a
registration statement of the Company filed under the Securities Act. Such
restriction shall apply only to the first registration statement of the Company
to become effective under the Securities Act that includes securities to be sold
on behalf of the Company to the public in an underwritten public offering under
the Securities Act. The Company may impose stop-transfer instructions with
respect to securities subject to the foregoing restrictions until the end of
such Market Standoff Period.

     12. Tax Consequences. Set forth below is a brief summary as of the date of
grant of this Stock Purchase Right of some of the federal tax consequences of
exercise of this Stock Purchase Right and disposition of the Shares. THIS
SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT
TO CHANGE.

        (a) Exercise of Stock Purchase Right. Generally, no income will be
recognized by Purchaser in connection with the exercise of the stock purchase
right for shares subject to the Repurchase Option, unless an election under
Section 83(b) of the Code is filed with the Internal Revenue Service within 30
days of the date of exercise of the right to purchase stock. The form for making
this election is attached as Exhibit F hereto. Otherwise, as the Company's
repurchase right lapses, Purchaser will recognize compensation income in an
amount equal to the difference between the Fair Market Value of the stock at the
time the Company's repurchase right lapses and the amount paid for the stock, if
any (the "Spread"). If Purchaser is a Service Provider or former Service
Provider, the Spread will be subject to tax withholding by the Company, and

                                      -10-
<PAGE>

the Company will be entitled to a tax deduction in the amount at the time the
Purchaser recognizes ordinary income with respect to a Stock Purchase Right.

        (b) Disposition of Shares. Upon disposition of the Shares, any gain or
loss is treated as capital gain or loss. If the Shares are held for more than
one year, any gain realized on disposition of the shares will be treated as
long-term capital gain for federal income tax purposes. Long-term capital gains
are grouped and netted by holding periods. Net capital gains on assets held for
more than 12 months is capped at 20%. Capital losses are allowed in full against
capital gains, and up to $3,000 against other income.

         THE PURCHASER ACKNOWLEDGES THAT IT IS THE PURCHASER'S SOLE
RESPONSIBILITY AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION UNDER SECTION
83(b), EVEN IF THE PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE
THIS FILING ON THE PURCHASER'S BEHALF.

     13. No Guarantee of Continued Service. PURCHASER ACKNOWLEDGES AND AGREES
THAT THE RELEASE OF SHARES FROM THE REPURCHASE OPTION OF THE COMPANY PURSUANT TO
PARAGRAPH 5 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS SERVICE PROVIDER AND
THE COMPANY ACHIEVING CERTAIN TARGETS (AS DEFINED) (NOT THROUGH THE ACT OF BEING
HIRED OR PURCHASING SHARES HEREUNDER). PURCHASER FURTHER ACKNOWLEDGES AND AGREES
THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING
SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF
CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY
PERIOD, OR AT ALL.

     14. Notices. Any notice, demand or request required or permitted to be
given by either the Company or the Purchaser pursuant to the terms of this
Agreement shall be in writing and may be delivered by hand, by nationally
recognized private courier, or by certified mail. Notices delivered by hand or
by nationally recognized private courier shall be deemed given when delivered
personally to the addressee or to the courier, or if given by certified mail
when deposited in the U.S. mail, certified and with postage prepaid, and
addressed to the parties at the addresses of the parties set forth at the end of
this Agreement or such other address as a party may request by notifying the
other in writing.

     Any notice to the Escrow Holder shall be sent to the Company's address with
a copy to the other party not sending the notice.

     15. No Waiver. Either party's failure to enforce any provision or
provisions of this Agreement shall not in any way be construed as a waiver of
any such provision or provisions, nor prevent that party from thereafter
enforcing each and every other provision of this Agreement. The rights granted
both parties herein are cumulative and shall not constitute a waiver of either
party's right to assert all other legal remedies available to it under the
circumstances.

                                      -11-
<PAGE>

     16. Successors and Assigns. The Company may assign any of its rights under
this Agreement to single or multiple assignees, and this Agreement shall inure
to the benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer herein set forth, this Agreement shall be binding upon
Purchaser and his or her heirs, executors, administrators, successors and
assigns.

     17. Interpretation. Any dispute regarding the interpretation of this
Agreement shall be submitted by Purchaser or by the Company forthwith to the
Administrator which shall review such dispute at its next regular meeting. The
resolution of such a dispute by the Administrator shall be final and binding on
all parties.

     18. Governing Law; Severability. This Agreement is governed by the internal
substantive laws, but not the choice of law rules, of New York.

     19. Entire Agreement. The Plan is incorporated herein by reference. This
Agreement (including the exhibits referenced herein), the Plan and the
Investment Representation Statement constitute the entire agreement of the
parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Purchaser with
respect to the subject matter hereof, and may not be modified adversely to the
Purchaser's interest except by means of a writing signed by the Company and
Purchaser.

     By Purchaser's signature below, Purchaser represents that he or she is
familiar with the terms and provisions of the Plan, and hereby accepts this
Agreement subject to all of the terms and provisions thereof. Purchaser has
reviewed the Plan and this Agreement in their entirety, has had an opportunity
to obtain the advice of counsel prior to executing this Agreement and fully
understands all provisions of this Agreement. Purchaser agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions

                                      -12-
<PAGE>

arising under the Plan or this Agreement. Purchaser further agrees to notify the
Company upon any change in the residence indicated in the Notice of Grant of
Stock Purchase Right.

JAMES MOLENDA                              NEXSAN CORPORATION

     Address:                                   Address:

20628 Calhaven Drive                       C/o Beechtree Capital, Ltd.
Santa Clarita, CA 91350                    1 Rockefeller Plaza
                                           Suite 1600
                                           New York, NY 10020

                                           By: /s/  Martin Boddy
                                               ---------------------------
/s/ James Molenda                              Name Printed: Martin Boddy
-----------------------                        Title: CEO
Signature

/s/ James Molenda
-------------------
Print Name
                                      -13-
<PAGE>

                                PROMISSORY NOTE

$792,000                                                     January 4, 2001
                                                             New York, New York

     FOR VALUE RECEIVED, the undersigned, JAMES MOLENDA, (the "Payor"), with an
address at 20628 Calhaven Drive, Santa Clarita, CA 91350, promises to pay to the
order of Nexsan Corporation, a Delaware corporation ("Payee") with offices at
c/o Beachtree Capital, Ltd., 1 Rockefeller Plaza, New York, NY 10020, the
principal amount of Seven Hundred Ninety Two Thousand ($792,000) Dollars, in
such coin or currency of the United States of America as at the time of payment
shall be legal tender for the payment of public or private debts, together with
interest thereon at the rate of 5.61% per annum. Interest accrued hereunder
shall be due and payable on the stated or any accelerated maturity date, and the
principal amount hereof, together with all accrued but unpaid interest thereon,
shall be paid on the fifth anniversary of the date hereof.

     This Note is issued by the Payor as payment in connection with the purchase
by the Payor of one million two hundred (1,200,000) shares of the common stock
("Common Stock") of the Payee pursuant to a Restricted Stock Purchase Agreement
dated the date hereof and is entitled to the benefits thereof.

     1. Events of Default.

        a. Upon the occurrence of any of the following events (hereinafter
called "Events of Default") which shall have occurred and be continuing:

           (i) The Payor shall default in any payment of principal or interest
        due under this Note and fail to cure such default within ten days after
        notice thereof;

           (ii) (1) The Payor shall commence any proceeding or other action
        relating to him in bankruptcy or seek readjustment of his debts,
        receivership, composition or any other relief under the Bankruptcy Act,
        as amended, or under any other insolvency, readjustment of debt or any
        other similar act or law, of any jurisdiction, domestic or foreign, now
        or hereafter existing; or (2) the Payor shall admit the material
        allegations of any petition or pleading in connection with any such
        proceeding; or (3) the Payor makes a general assignment for the benefit
        of his creditors;

           (iii) (1) The commencement of any proceedings or the taking of any
        other action against the Payor in bankruptcy or seeking the
        reorganization, arrangement or readjustment of his debts, or any other
        relief under the Bankruptcy Act, as amended, or under any other
        insolvency, readjustment of debt or any other similar act or law of any
        jurisdiction, domestic or foreign, now or hereafter existing and the
        continuance of any of such events for sixty (60) days undismissed,
        unbonded or undischarged; or (2) the issuance of a warrant of
        attachment, execution or similar process against substantially all of
        the property of the Payor and the continuance of such event for thirty
        (30) days undismissed, unbonded and undischarged; or

           (iv) (1)The Payor voluntarily elects to terminate his or her
        employment agreement with, or his or her arrangement for the provision
        of services to, the Payee, or (2) the Payee elects to terminate the
        Payor's employment or service agreement for Cause, as such term is
        defined in the

<PAGE>

        Option Plan, then, and in any such event, the Payee may, by written
        notice to the Payor, declare the entire unpaid principal amount of this
        Note, together with all accrued but unpaid interest thereon, due and
        payable, and the same shall forthwith become due and payable upon
        without presentment, demand, protest, or other notice of any kind, all
        of which are expressly waived.

        b. Non-Waiver and Other Remedies. No course of dealing or delay on the
part of the holder of this Note in exercising any right hereunder shall operate
as a waiver thereof or otherwise prejudice the rights of the holder of this
Note. No remedy conferred hereby shall be exclusive of any other remedy referred
to herein or now or hereafter available at law, in equity, by statute or
otherwise.

     2. Security.

        (a) Pledge Agreement. This Note is secured by a Pledge Agreement between
the Payor and the Payee, dated of even date herewith (the "Pledge Agreement"),
pursuant to which the Payor has pledged the Common Stock as collateral for
payment hereunder.

        (b) Recourse. No recourse under or upon any obligation, covenant or
agreement of this Note, or for any claim based hereon or otherwise in respect
hereof, shall be had against the Payor or his assigns, except (i) for accrued
and unpaid interest, and (ii) in the event the amount actually applied to the
payment of principal of this Note after payment of costs and expenses and
accrued but unpaid interest hereon upon any sale by the Payee of the Common
Stock (or any other collateral held as security for this Note) pursuant to
Section 3 of the Pledge Agreement, or otherwise, is less than the original
principal amount hereof, then this Note shall be with recourse to the Payor as
to not more than thirty three and one-third percent (33 1/3 %) of the principal
remaining unpaid immediately prior to such application.

     3. Prepayment. The indebtedness evidenced by this Note may be prepaid by
the Payor at any time in whole or in part from time to time, without premium or
penalty, provided that any prepayment of any portion of the outstanding
principal amount hereof shall be accompanied by all accrued but unpaid interest
thereon.

     4. Lost Documents. Upon receipt by the Payor of evidence reasonably
satisfactory to him of the loss, theft, destruction or mutilation of this Note
or any Note exchanged for it, and (in the case of loss, theft or destruction) of
indemnity reasonably satisfactory to him, and upon reimbursement to the Payor of
all reasonable expenses incidental thereto, and upon surrender and cancellation
of such Note, if mutilated, the Payor will make and deliver to the Payee in lieu
of such Note a new Note of like tenor and unpaid principal amount and dated as
of the original date of this Note.

     5. No Presentment, etc. The Payor and any endorsers, sureties and
guarantors of this Note waive presentment for payment, demand, protest, notice
of protest and notice of dishonor hereof, and all other notices to which they
may be entitled.

     6. Miscellaneous.

        a. Parties in Interest. All covenants, agreements and undertakings in
this Note by and on behalf of any of the parties hereto shall bind and inure to
the benefit of the respective permitted successors and assigns of the parties
hereto whether so expressed or not.

        b. Notices. All notices, requests, consents and demands shall be made in
writing and shall be sent, and deemed delivered, in the manner prescribed in
Paragraph 12 of the Pledge Agreement.

        c. Waiver. The failure of the Payee to exercise any right or remedy
granted to him hereunder on any one or more instances, shall not constitute a
waiver of any default by the Payee, and all such rights and remedies shall
remain continuously in force. No delay or omission in the exercise or
enforcement by the Payee of any rights or remedies shall be construed as a
waiver of any right or remedy

<PAGE>

of the Payee; and no exercise or enforcement of any such right or remedy shall
be held to exhaust any other right or remedy of the Payee.

        d. Illegality. If any one or more of the provisions contained in this
Note shall for any reason be held to be invalid, illegal or unenforceable, such
invalidity, illegality or unenforceability shall not affect any other provisions
of this Note and this Note shall be construed as if such invalid, illegal or
unenforceable provision had never been contained herein.

        e. Amendment. This Note may not be changed orally, but only by an
instrument in writing duly executed by the party against which enforcement of
any waiver, change, modification or discharge is sought.

        f. Construction. This Note shall be construed and enforced in accordance
with, and the rights of the parties shall be governed by, the laws of the State
of New York.

<PAGE>

     IN WITNESS WHEREOF, this Note has been executed and delivered by the Payor
on the date specified above.

                                              By: /s/ James Molenda
                                                  -----------------------
                                                  James Molenda, as Payor

ACCEPTED:

NEXSAN CORPORATION

By: /s/ Martin Boddy
    --------------------
    Name: Martin Boddy
    Title: CEO

<PAGE>

                                    EXHIBIT B

                                PLEDGE AGREEMENT

     THE PLEDGE AGREEMENT (the "Agreement"), entered into as of ____________,
2001, by and between Nexsan Corporation ("Secured Party") and __________ (the
"Pledgor").

                              W I T N E S S E T H:

     WHEREAS, Pledgor has purchased from the Secured Party ______________shares
("Shares") of the common stock of Nexsan Corporation, a Delaware corporation
(the "Corporation"), pursuant to the Restricted Stock Purchase Agreement and
exhibits thereto (collectively the "Agreement"), dated the date hereof between
Pledgor and the Secured Party ("Stock Purchase Agreement"); and

     WHEREAS, Pledgor has agreed to pledge the Shares as security for the
Promissory Note of even date herewith, made by Pledgor to the order of the
Secured Party pursuant to the Stock Purchase Agreement (the "Note").

     NOW, THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

     1. Warranty and Covenant. Pledgor represents and warrants to the Secured
Party that except for the security interest created hereby, and except for
restrictions imposed by the Restricted Stock Purchase Agreement, he owns the
Shares free and clear of all liens, charges and encumbrances and that he has the
unencumbered right to pledge such Shares pursuant to the terms hereof.

     2. Pledge. As security for the prompt payment and performance when due
(whether at stated maturity, by acceleration or otherwise) of all indebtedness
and all other liabilities and obligations, whether now existing or hereafter
arising, of Pledgor to the Secured Party under or arising out of the Note
(collectively, the "Obligations"), Pledgor hereby delivers, pledges and assigns
to Secured Party and creates in Secured Party a perfected first security
interest in all of Pledgor's right, title and interest in, to and under all of
the Shares, together with (subject to the terms of Section 3 hereof) all rights
and privileges of Pledgor with respect thereto, all proceeds, income and profits
thereof and all property received in addition thereto, in exchange thereof or in
substitution therefor and in any other property or assets of equal value as may
from time to time be substituted by mutual agreement of the parties hereto as
collateral security hereunder (all such property of Pledgor being hereinafter
referred to collectively as the "Collateral").

<PAGE>

     3. Rights of Pledgor. So long as no Default has occurred and is continuing
(as used, herein, the term "Default" shall mean and include (i) the failure of
Pledgor to perform any of her Obligations when due, (ii) any material
misrepresentation by Pledgor in or with respect to any provision of the
Agreement or the Note, or (iii) any attachment of the Collateral at any time
pursuant to any court order or other legal process), (a) Pledgor shall be
entitled to vote or consent with respect to the Collateral in any manner not
inconsistent with the Agreement or the Note, and (b) all cash distributions with
respect to the Shares shall, anything in Section 2 or elsewhere herein to the
contrary notwithstanding, be the sole and exclusive property of Pledgor.

     4. Event of Default. In the event of the occurrence of an Event of Default,
as such term is defined in the Note, and the continuation of such Event of
Default uncured beyond any applicable notice or other grace period, Secured
Party may sell or otherwise dispose of the Collateral at a public or private
sale or make other commercially reasonable disposition of the Collateral or any
portion thereof after twenty_one (21) calendar days' notice to the Pledgor. Any
proceeds of the disposition of the Collateral in excess of the then outstanding
Obligations shall promptly be remitted to Pledgor by the Secured Party.

     If any consent, approval or authorization of any state, municipal or other
governmental department, agency or authority should be necessary to effectuate
any sale or other disposition of the Collateral, or any partial disposition of
the Collateral, Pledgor agrees to execute all such applications and other
instruments as may be required in connection with securing any such consent,
approval or authorization, and will otherwise use her reasonable best efforts to
secure the same. Pledgor further agrees to use her reasonable best efforts
(without incurring any additional cost or expense) to secure such sale or other
disposition of the Collateral as the Secured Party may deem necessary pursuant
to the terms of the Agreement

     5. Additional Rights of the Secured Party. In addition to its rights and
privileges under the Agreement, the Secured Party shall have all the rights,
powers and privileges of a secured party under the Uniform Commercial Code as in
effect in any applicable jurisdiction.

     6. Binding Agreement. The Agreement shall be construed and interpreted in
accordance with the internal laws of the State of New York applicable to
agreements made and to be performed wholly within the State of New York. The
Agreement, together with all documents referred to herein, constitutes the
entire agreement between the parties with respect to the matters addressed
herein and may not be modified except by a writing executed by Pledgor and the
Secured Party.

     7. Covenants. The Secured Party covenants that, provided no Default or
Event of Default (as defined in the Note) shall exist and be continuing, it
shall release Shares from the pledge created hereby upon payment of a pro rata
portion of the Note and accrued interest; provided, that such Shares shall be
delivered by Secured Party to the Escrow Holder (as defined in the Stock
Purchase Agreement) to be held and disposed of in accordance with the terms of
the Stock Purchase Agreement.

                                      -2-
<PAGE>

     8. Termination. The Agreement shall continue in full force and effect until
all the Obligations shall have been fully and indefeasibly paid in full. The
Collateral shall be delivered to the Escrow Holder upon full payment,
satisfaction and termination of all of the Obligations, to be held and disposed
of in accordance with the terms of the Agreement.

     9. Further Assurances. Pledgor shall at any time and from time to time upon
the written request of the Secured Party, execute and deliver such further
documents and do such further acts and things as the Secured Party may
reasonably request in order to effect the purposes of the Agreement.

     10. Severability. If any paragraph herein, or part thereof, shall for any
reason be held or adjudged to be invalid, illegal or unenforceable by any court
of competent jurisdiction, such paragraph or part thereof so adjudicated
invalid, illegal or unenforceable shall be deemed separate, distinct and
independent, and the remainder of the Agreement shall remain in full force and
effect and shall not be affected by such holding or adjudication.

     11. Successors and Assigns. The Agreement, and the terms and conditions
hereof, shall be binding upon and shall inure to the benefit of the Pledgor and
his or her successors and assigns, and the Secured Party and his or her
successors and assigns; provided that Pledgor may not assign or delegate his or
her obligations hereunder without the prior written consent of the Secured Party
and any purported assignment or delegation by Pledgor of his or her obligations
hereunder in the absence of such written consent shall be void.

     12. Notices. All notices and other communication provided for herein shall
be in writing and mailed, by registered or certified mail, return receipt
requested, or delivered by overnight courier or by hand, to the intended
recipient at the "Address for Notices" specified below intended recipient's name
on the signature page hereof; or, as to either party, at such other address as
shall hereafter be designated by such party in a notice to the other party.
Except as otherwise provided in the Agreement, all notices and other
communications hereunder shall be deemed to have been duly given when received
by the intended recipient.

     13. Counterparts. The Agreement may be executed in any number of
counterpart copies, each of which shall be deemed an original, but which
together shall constitute a single instrument.

     14. Headings. Descriptive headings appearing herein are included solely for
convenience of reference and are not intended to affect the meaning or
construction of any of the provisions of the Agreement.

              [The remainder of this page is intentionally blank.]

                                      -3-
<PAGE>

     IN WITNESS WHEREOF, the undersigned parties hereto have executed the
Agreement, as of the day and year first above written.

                                        ______________________________
                                        __________________, as Pledgor
                                        Address for Notices: ___________________

                                                             ___________________

                                        NEXSAN CORPORATION

                                        By: ____________________________________
                                            Name Printed: _____________
                                            Title: ____________________

                                      -4-
<PAGE>

                                  EXHIBIT B-1

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

     FOR VALUE RECEIVED the undersigned, __________________________, does hereby
sell, assign and transfer unto __________________________ (__________) shares of
the Common Stock of Nexsan Corporation, standing in the name of the undersigned
on the books of said corporation represented by Certificate No._____ herewith
and does hereby irrevocably constitute and appoint
______________________________ to transfer the said stock on the books of the
within named corporation with full power of substitution in the premises.

     This Stock Assignment may be used only in accordance with the Pledge
Agreement between Nexsan Corporation and the undersigned dated
_________________.

Dated: _______________, _____       Signature:______________________________

INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise its
Repurchase Option as set forth in the Agreement, without requiring additional
signatures on the part of the Purchaser.

                                      -5-
<PAGE>

                                   EXHIBIT C

                       INVESTMENT REPRESENTATION STATEMENT

PURCHASER:        ________________________
COMPANY:          Nexsan Corporation
SECURITY:         COMMON STOCK
AMOUNT:           _______________ shares
DATE:             _________________

     In connection with the purchase of the above-listed shares of common stock
(the "Securities"), the undersigned Purchaser represents to the Company the
following:

     Purchaser is aware of the Company's business affairs and financial
condition and has acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire the Securities. Purchaser is
acquiring these Securities for investment for Purchaser's own account only and
not with a view to, or for resale in connection with, any "distribution" thereof
within the meaning of the Securities Act of 1933, as amended (the "Securities
Act").

     Purchaser acknowledges and understands that the Securities constitute
"restricted securities" under the Securities Act and have not been registered
under the Securities Act in reliance upon a specific exemption therefrom, which
exemption depends upon, among other things, the bona fide nature of Purchaser's
investment intent as expressed herein. In this connection, Purchaser understands
that, in the view of the Securities and Exchange Commission, the statutory basis
for such exemption may be unavailable if Purchaser's representation was
predicated solely upon a present intention to hold these Securities for the
minimum capital gains period specified under tax statutes, for a deferred sale,
for or until an increase or decrease in the market price of the Securities, or
for a period of one (1) year or any other fixed period in the future. Purchaser
further understands that the Securities must be held indefinitely unless they
are subsequently registered under the Securities Act or an exemption from such
registration is available. Purchaser further acknowledges and understands that
the Company is under no obligation to register the Securities. Purchaser
understands that the certificate evidencing the Securities will be imprinted
with a legend which prohibits the transfer of the Securities unless they are
registered or such registration is not required in the opinion of counsel
satisfactory to the Company, a legend prohibiting their transfer without the
consent of the Commissioner of Corporations of the State of Delaware and any
other legend required under applicable state securities laws.

     Purchaser is familiar with the provisions of Rule 701 and Rule 144, each
promulgated under the Securities Act, which, in substance, permit limited public
resale of "restricted securities" acquired, directly or indirectly from the
issuer thereof, in a non-public offering subject to the satisfaction of certain
conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at the
time of the grant of the Stock Purchase Right to the Purchaser, the exercise
will be exempt from

                                      -1-
<PAGE>

registration under the Securities Act. In the event the Company becomes subject
to the reporting requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, ninety (90) days thereafter (or such longer period as any market
stand-off agreement may require) the Securities exempt under Rule 701 may be
resold, subject to the satisfaction of certain of the conditions specified by
Rule 144, including: (1) the resale being made through a broker in an
unsolicited "broker's transaction" or in transactions directly with a market
maker (as said term is defined under the Securities Exchange Act of 1934); and,
in the case of an affiliate, (2) the availability of certain public information
about the Company, (3) the amount of Securities being sold during any three (3)
month period not exceeding the limitations specified in Rule 144(e), and (4) the
timely filing of a Form 144, if applicable.

     In the event that the Company does not qualify under Rule 701 at the time
of grant of the Stock Purchase Right, then the Securities may be resold in
certain limited circumstances subject to the provisions of Rule 144, which
requires the resale to occur not less than one (1) year after the later of the
date the Securities were sold by the Company or the date the Securities were
sold by an affiliate of the Company, within the meaning of Rule 144; and, in the
case of acquisition of the Securities by an affiliate, or by a non-affiliate who
subsequently holds the Securities less than two (2) years, the satisfaction of
the conditions set forth in sections (1), (2), (3) and (4) of the paragraph
immediately above.

     Purchaser further understands that in the event all of the applicable
requirements of Rule 701 or 144 are not satisfied, registration under the
Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rules 144
and 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rules 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such
persons and their respective brokers who participate in such transactions do so
at their own risk. Purchaser understands that no assurances can be given that
any such other registration exemption will be available in such event.

Signature of Purchaser:

_______________________________
Print Name: ___________________

Date: ______________________

                                      -2-
<PAGE>

                                   EXHIBIT D

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

     FOR VALUE RECEIVED, the undersigned, __________________________, does
hereby sell, assign and transfer unto __________________________ (__________)
shares of the Common Stock of Nexsan Corporation, standing in the name of the
undersigned on the books of said corporation represented by Certificate No._____
herewith and does hereby irrevocably constitute and appoint
______________________________ to transfer the said stock on the books of the
within named corporation with full power of substitution in the premises.

     This Stock Assignment may be used only in accordance with the Restricted
Stock Purchase Agreement between Nexsan Corporation and the undersigned dated
______________, ____.

Dated: _______________, _____       Signature:______________________________

INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise its
Repurchase Option as set forth in the Agreement, without requiring additional
signatures on the part of the Purchaser.

                                       1
<PAGE>

                                   EXHIBIT E

                            JOINT ESCROW INSTRUCTIONS
                                                    _________________, _________

Mr. ______________
Secretary, Nexsan Corporation

_____________________________

_____________________________

Dear Sir:

     As Escrow Agent for both Nexsan Corporation, a Delaware corporation (the
"Company"), and the undersigned purchaser of stock of the Company (the
"Purchaser"), you are hereby authorized and directed to hold the documents
delivered to you pursuant to the terms of that certain Restricted Stock Purchase
Agreement ("Agreement") between the Company and the undersigned, in accordance
with the following instructions:

        a. In the event the Company and/or any assignee of the Company (referred
to collectively for convenience herein as the "Company") exercises the Company's
repurchase option set forth in the Agreement (the "Repurchase Option"), the
Company shall give to Purchaser and you a written notice specifying the number
of shares of stock to be purchased, the purchase price, and the time for a
closing hereunder at the principal office of the Company. Purchaser and the
Company hereby irrevocably authorize and direct you to close the transaction
contemplated by such notice in accordance with the terms of said notice.

        b. At the closing, you are directed (i) to date the stock assignments
necessary for the transfer in question, (ii) to fill in the number of shares
being transferred, and (iii) to deliver same, together with the certificate
evidencing the shares of stock to be transferred, to the Company or its
assignee, against the simultaneous delivery to you of the purchase price (by
cash, a check, or some combination thereof) for the number of shares of stock
being purchased pursuant to the exercise of the Repurchase Option.

        c. Purchaser irrevocably authorizes the Company to deposit with you any
certificates evidencing shares of stock to be held by you hereunder and any
additions to and substitutions for said shares as defined in the Agreement.
Purchaser does hereby irrevocably constitute and appoint you as Purchaser's
attorney-in-fact and agent for the term of this escrow to execute with respect
to such securities all documents necessary or appropriate to make such
securities negotiable and to complete any transaction herein contemplated,
including but not limited to the filing with any applicable state blue sky
authority of any required applications for consent to, or notice of transfer of,
the securities. Subject to the provisions of this paragraph (c), Purchaser shall
exercise all rights and privileges of a shareholder of the Company while the
stock is held by you.
                                       1
<PAGE>

        d. Once per calendar year and upon termination of this escrow, unless
the Repurchase Option has been exercised, you will deliver to Purchaser a
certificate or certificates representing so many shares of stock as are not then
subject to the Repurchase Option. Within ninety (90) days after cessation of
Purchaser's continuous employment by or services to the Company, or any parent
or subsidiary of the Company, you will deliver to Purchaser a certificate or
certificates representing the aggregate number of shares held or issued pursuant
to the Agreement and not purchased by the Company or its assignees pursuant to
exercise of the Repurchase Option.

        e. If at the time of termination of this escrow you should have in your
possession any documents, securities, or other property belonging to Purchaser,
you shall deliver all of the same to Purchaser and shall be discharged of all
further obligations hereunder.

        f. Your duties hereunder may be altered, amended, modified or revoked
only by a writing signed by all of the parties hereto.

        g. You shall be obligated only for the performance of such duties as are
specifically set forth herein and may rely and shall be protected in relying or
refraining from acting on any instrument reasonably believed by you to be
genuine and to have been signed or presented by the proper party or parties. You
shall not be personally liable for any act you may do or omit to do hereunder as
Escrow Agent or as attorney-in-fact for Purchaser while acting in good faith,
and any act done or omitted by you pursuant to the advice of your own attorneys
shall be conclusive evidence of such good faith.

        h. You are hereby expressly authorized to disregard any and all warnings
given by any of the parties hereto or by any other person or corporation,
excepting only orders or process of courts of law and are hereby expressly
authorized to comply with and obey orders, judgments or decrees of any court. In
case you obey or comply with any such order, judgment or decree, you shall not
be liable to any of the parties hereto or to any other person, firm or
corporation by reason of such compliance, notwithstanding any such order,
judgment or decree being subsequently reversed, modified, annulled, set aside,
vacated or found to have been entered without jurisdiction.

        i. You shall not be liable in any respect on account of the identity,
authorities or rights of the parties executing or delivering or purporting to
execute or deliver the Agreement or any documents or papers deposited or called
for hereunder.

        j. You shall be entitled to employ such legal counsel and other experts
as you may deem necessary properly to advise you in connection with your
obligations hereunder, may rely upon the advice of such counsel, and may pay
such counsel reasonable compensation therefor.

        k. Your responsibilities as Escrow Agent hereunder shall terminate if
you shall cease to be an officer or agent of the Company or if you shall resign
by written notice to each party. In the event of any such termination, the
Company shall appoint a successor Escrow Agent.

                                      -2-
<PAGE>

        l. If you reasonably require other or further instruments in connection
with these Joint Escrow Instructions or obligations in respect hereto, the
necessary parties hereto shall join in furnishing such instruments.

        m. It is understood and agreed that should any dispute arise with
respect to the delivery and/or ownership or right of possession of the
securities held by you hereunder, you are authorized and directed to retain in
your possession without liability to anyone all or any part of said securities
until such disputes shall have been settled either by mutual written agreement
of the parties concerned or by a final order, decree or judgment of a court of
competent jurisdiction after the time for appeal has expired and no appeal has
been perfected, but you shall be under no duty whatsoever to institute or defend
any such proceedings.

        n. Any notice required or permitted hereunder shall be given in writing
and shall be deemed effectively given upon personal delivery or upon deposit in
the United States Post Office, by registered or certified mail with postage and
fees prepaid, addressed to each of the other parties thereunto entitled at the
following addresses or at such other addresses as a party may designate by ten
(10) days' advance written notice to each of the other parties hereto.

                  COMPANY:         Nexsan Corporation
                                   __________________

                  PURCHASER:       __________________

                                   __________________

                  ESCROW AGENT:    __________________

                                   __________________

                                   __________________

                                   __________________

        o. By signing these Joint Escrow Instructions, you become a party hereto
only for the purpose of said Joint Escrow Instructions; you do not become a
party to the Agreement.

        p. This instrument shall be binding upon and inure to the benefit of the
parties hereto, and their respective successors and permitted assigns.

        q. The Restricted Stock Purchase Agreement is incorporated herein by
reference. These Joint Escrow Instructions, the 2001 Stock Plan, and the
Restricted Stock Purchase Agreement (including the exhibits referenced therein)
constitute the entire agreement of the parties with respect to the subject
matter hereof and supersede in their entirety all prior undertakings and
agreements of the Escrow Agent, the Purchaser and the Company with respect to
the subject matter hereof, and
                                      -3-
<PAGE>

may not be modified except by means of a writing signed by the Escrow Agent,
the Purchaser and the Company.

        r. These Joint Escrow Instructions shall be governed by, and construed
and enforced in accordance with, the laws of the State of New York.

                                          Very truly yours,

                                          Nexsan Corporation

                                          By: ________________________________
                                              Printed Name:________________
                                              Title:_______________________

                                          PURCHASER:

                                          ____________________________________
                                          (Signature)

                                          ____________________________________
                                          (Typed or Printed Name)

ESCROW AGENT:

__________________________

__________________________

                                       -4-

<PAGE>

                                    EXHIBIT F

                          ELECTION UNDER SECTION 83(b)

                      OF THE INTERNAL REVENUE CODE OF 1986

     The undersigned taxpayer hereby elects, pursuant to the above_referenced
Federal Tax Code, to include in taxpayer's gross income for the current taxable
year, the amount of any compensation taxable to taxpayer in connection with his
receipt of the property described below:

        a. The name, address, taxpayer identification number and taxable year of
the undersigned are as follows:

                  NAME:

                  ADDRESS:

                  IDENTIFICATION NO.:

                  TAXABLE YEAR:  2001

        b. The property with respect to which the election is made is described
as follows: ___________________shares (the "Shares") of the Common Stock of
Nexsan Corporation (the "Company").

        c. The date on which the property was transferred is: ________________,
2001.

        d. The property is subject to the following restrictions: The Shares may
be repurchased by the Company, or its assignee, on certain events. This
repurchase right lapses with regard to a portion of the Shares based on the
achievement by the Company of certain performance targets while the undersigned
is a service provider of the Company.

        e. The fair market value at the time of transfer, determined without
regard to any restriction other than a restriction which by its terms will never
lapse, of such property is:

$ ____________ per share.

        f. The amount (if any) paid for such property is: $ ____________per
share.

     The undersigned has submitted a copy of this statement to the person for
whom the services were performed in connection with the undersigned's receipt of
the above-described property. The transferee of such property is the person
performing the services in connection with the transfer of said property.

                                       1
<PAGE>

     The undersigned understands that the foregoing election may not be revoked
except with the consent of the Commissioner.

Dated: _______________, ____

____________________________, Taxpayer
Printed Name: - __________________________

                                      -2-

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