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                                                                    EXHIBIT 99.1


                             DOT HILL SYSTEMS CORP.

                 2000 NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN


                              Adopted March 9, 2000
                      Approved By Stockholders May 8, 2000

                          Effective Date: March 9, 2000
                         Termination Date: March 8, 2010

1.       PURPOSES.

         (a) ELIGIBLE OPTION RECIPIENTS. The persons eligible to receive Options
are the Non-Employee Directors of the Company.

         (b) AVAILABLE OPTIONS. The purpose of the Plan is to provide a means by
which Non-Employee Directors may be given an opportunity to benefit from
increases in value of the Common Stock through the granting of Nonstatutory
Stock Options.

         (c) GENERAL PURPOSE. The Company, by means of the Plan, seeks to retain
the services of its Non-Employee Directors, to secure and retain the services of
new Non-Employee Directors and to provide incentives for such persons to exert
maximum efforts for the success of the Company and its Affiliates.

2.       DEFINITIONS.

         (a) "AFFILIATE" means any parent corporation or subsidiary corporation
of the Company, whether now or hereafter existing, as those terms are defined in
Sections 424(e) and (f), respectively, of the Code.

         (b) "ANNUAL GRANT" means an Option granted pursuant to subsection 6(b)
of the Plan.

         (c) "ANNUAL MEETING" means the annual meeting of the stockholders of
the Company.

         (d) "BOARD" means the Board of Directors of the Company.

         (e) "CODE" means the Internal Revenue Code of 1986, as amended.

         (f) "COMMON STOCK" means the common stock of the Company.

         (g) "COMPANY" means DOT HILL SYSTEMS CORP., a New York corporation.

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         (h) "CONSULTANT" means any person, including an advisor, engaged by the
Company or an Affiliate to render consulting or advisory services and who is
compensated for such services. A person shall not be deemed a "Consultant"
solely by reason of the performance of services as a Director and/or the payment
of compensation in relation thereto.

         (i) "CONTINUOUS SERVICE" means that the Optionholder's service with the
Company as a Non-Employee Director is not interrupted or terminated. The
Optionholder's Continuous Service in any event shall not be deemed to have been
interrupted or terminated by reason of a change in the capacity in which the
Optionholder renders service to the Company or an Affiliate of the Company. For
example, a change in status from a Non-Employee Director to an Employee or
Consultant will not constitute an interruption or termination of Continuous
Service. The Board, in its sole discretion, may determine whether Continuous
Service shall be considered interrupted or terminated in the case of any leave
of absence approved by the Board, including sick leave, military leave or any
other personal leave.

         (j) "DIRECTOR" means a member of the Board of Directors of the Company.

         (k) "DISABILITY" means the permanent and total disability of a person
within the meaning of Section 22(e)(3) of the Code.

         (l) "EMPLOYEE" means any person employed by the Company or an
Affiliate. Service as a Director and/or payment of compensation in relation
thereto, in and of itself, shall not be sufficient to constitute "employment" by
the Company or an Affiliate.

         (m) "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended.

         (n) "FAIR MARKET VALUE" means, as of any date, the value of the Common
Stock determined as follows:

                  (i) If the Common Stock is listed on any established stock
exchange, such as the New York Stock Exchange, or traded on the Nasdaq National
Market or the Nasdaq SmallCap Market, the Fair Market Value of a share of Common
Stock shall be the closing sales price for such stock (or the closing bid, if no
sales were reported) as quoted on such exchange or market (or the exchange or
market with the greatest volume of trading in the Common Stock) on the last
market trading day prior to the day of determination, as reported in The Wall
Street Journal or such other source as the Board deems reliable.

                  (ii) In the absence of such markets for the Common Stock, the
Fair Market Value shall be determined in good faith by the Board.

         (o) "INITIAL GRANT" means an Option granted pursuant to section 6(a) of
the Plan.

         (p) "NON-EMPLOYEE DIRECTOR" means a Director who is not an Employee.

         (q) "NONSTATUTORY STOCK OPTION" means an Option not intended to qualify
as an "incentive stock option" within the meaning of Section 422 of the Code and
the regulations promulgated thereunder.

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         (r) "OPTION" means a Nonstatutory Stock Option granted pursuant to the
Plan.

         (s) "OPTION AGREEMENT" means a written agreement between the Company
and an Optionholder evidencing the terms and conditions of an individual Option
grant. Each Option Agreement shall be subject to the terms and conditions of the
Plan.

         (t) "OPTIONHOLDER" means a person to whom an Option is granted pursuant
to the Plan or, if applicable, such other person who holds an outstanding
Option.

         (u) "PLAN" means this DOT HILL SYSTEMS CORP. 2000 Non-Employee
Directors' Stock Option Plan.

         (v) "RULE 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
any successor to Rule 16b-3, as in effect from time to time.

         (w) "SECURITIES ACT" means the Securities Act of 1933, as amended.

3.       ADMINISTRATION.

         (a) ADMINISTRATION BY BOARD. The Board shall administer the Plan. The
Board may not delegate administration of the Plan to a committee.

         (b) POWERS OF BOARD. The Board shall have the power, subject to, and
within the limitations of, the express provisions of the Plan:

                  (i) To determine the provisions of each Option to the extent
not specified in the Plan.

                  (ii) To construe and interpret the Plan and Options granted
under it, and to establish, amend and revoke rules and regulations for its
administration. The Board, in the exercise of this power, may correct any
defect, omission or inconsistency in the Plan or in any Option Agreement, in a
manner and to the extent it shall deem necessary or expedient to make the Plan
fully effective.

                  (iii) To amend the Plan or an Option as provided in Section
12.

                  (iv) Generally, to exercise such powers and to perform such
acts as the Board deems necessary or expedient to promote the best interests of
the Company that are not in conflict with the provisions of the Plan.

         (c) EFFECT OF BOARD'S DECISION. All determinations, interpretations and
constructions made by the Board in good faith shall not be subject to review by
any person and shall be final, binding and conclusive on all persons.

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4.       SHARES SUBJECT TO THE PLAN.

         (a) SHARE RESERVE. Subject to the provisions of Section 11 relating to
adjustments upon changes in the Common Stock, the Common Stock that may be
issued pursuant to Options shall not exceed in the aggregate five hundred
thousand (500,000) shares of Common Stock.

         (b) REVERSION OF SHARES TO THE SHARE RESERVE. If any Option shall for
any reason expire or otherwise terminate, in whole or in part, without having
been exercised in full, the shares of Common Stock not acquired under such
Option shall revert to and again become available for issuance under the Plan.

         (c) SOURCE OF SHARES. The shares of Common Stock subject to the Plan
may be unissued shares or reacquired shares, bought on the market or otherwise.

5.       ELIGIBILITY.

         Options shall automatically be granted under the Plan to Non-Employee
Directors in accordance with Section 6.

6.       NON-DISCRETIONARY GRANTS.

         (a) INITIAL GRANTS. Without any further action of the Board, each
person who, at any time after the Company's 2000 Annual Meeting, is duly elected
or appointed by the Board of Directors or stockholders of the Company to serve
as a Non-Employee Director and who, for at least one (1) year preceding such
election or appointment has at no time served as a Non-Employee Director, shall,
effective as of the effective date of such election or appointment,
automatically be granted an option to purchase fifty thousand (50,000) shares of
Common Stock on the terms and conditions set forth in this Plan. Termination of
a Director's status as an Employee shall not result in an Initial Grant to such
Director pursuant to this Subsection 6(a).

         (b) ANNUAL GRANTS. Without any further action of the Board, each person
who, immediately following each Annual Meeting commencing with the 2000 Annual
Meeting, is a Non-Employee Director and who has been a Non-Employee Director for
at least four (4) months prior to such Annual Meeting shall, effective as of the
date of such Annual Meeting, automatically be granted an option to purchase ten
thousand (10,000) shares of Common Stock on the terms and conditions set forth
in this Plan.

7.       OPTION PROVISIONS.

         Each Option shall be in such form and shall contain such terms and
conditions as required by the Plan. Each Option shall contain such additional
terms and conditions, not inconsistent with the Plan, as the Board shall deem
appropriate. Each Option shall include (through incorporation of provisions
hereof by reference in the Option or otherwise) the substance of each of the
following provisions:

         (a) TERM. No Option shall be exercisable after the expiration of ten
(10) years from the date it was granted.

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         (b) EXERCISE PRICE. The exercise price of each Option shall be one
hundred percent (100%) of the Fair Market Value of the stock subject to the
Option on the date the Option is granted. Notwithstanding the foregoing, an
Option may be granted with an exercise price lower than that set forth in the
preceding sentence if such Option is granted pursuant to an assumption or
substitution for another option in a manner satisfying the provisions of Section
424(a) of the Code.

         (c) CONSIDERATION. The purchase price of stock acquired pursuant to an
Option may be paid, to the extent permitted by applicable statutes and
regulations, in any combination of the following methods:

                  (i) By cash or check.

                  (ii) Provided that at the time of exercise the Common Stock is
publicly traded and quoted regularly in the Wall Street Journal, by delivery of
already-owned shares of Common Stock either that the Optionholder has held for
the period required to avoid a charge to the Company's reported earnings
(generally six months) or that the Optionholder did not acquire, directly or
indirectly from the Company, that are owned free and clear of any liens, claims,
encumbrances or security interests, and that are valued at Fair Market Value on
the date of exercise. "Delivery" for these purposes shall include delivery to
the Company of the Optionholder's attestation of ownership of such shares of
Common Stock in a form approved by the Company. Notwithstanding the foregoing,
the Optionholder may not exercise the Option by tender to the Company of Common
Stock to the extent such tender would violate the provisions of any law,
regulation or agreement restricting the redemption of the Company's stock.

                  (iii) Provided that at the time of exercise the Common Stock
is publicly traded and quoted regularly in the Wall Street Journal, pursuant to
a program developed under Regulation T as promulgated by the Federal Reserve
Board that, prior to the issuance of Common Stock, results in either the receipt
of cash (or check) by the Company or the receipt of irrevocable instructions to
pay the aggregate exercise price to the Company from the sales proceeds.

                  (iv) Pursuant to the following deferred payment provisions:

                    (1) One hundred percent (100%) of the aggregate exercise
price, plus accrued interest, shall be due four (4) years from date of exercise
or upon termination of your Continuous Service.

                    (2) Interest shall be compounded annually and shall be
charged at the minimum rate of interest necessary to avoid the treatment as
interest, under any applicable provisions of the Code, of any portion of any
amounts other than amounts stated to be interest under the deferred payment
arrangement.

                    (3) At any time that the Company is incorporated in
Delaware, payment of the Common Stock's "par value," as defined in the Delaware
General Corporation Law, shall be made in cash and not by deferred payment.

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                    (4) The Optionholder must, as a part of his or her written
notice of exercise, give notice of the election of this payment alternative and
must tender to the Company a promissory note and a security agreement covering
the purchased shares of Common Stock, both in form and substance satisfactory to
the Company, or such other or additional documentation as the Company may
request.

         (d) TRANSFERABILITY. An Option is transferable by will or by the laws
of descent and distribution. Subject to this Subsection 7(d), an Option also is
transferable (i) by instrument to an inter vivos or testamentary trust, in a
form accepted by the Company, in which the Option is to be passed to
beneficiaries upon the death of the trustor (settlor), and (ii) by gift, in a
form accepted by the Company, to a member of the "immediate family" of the
Optionholder as that term is defined in 17 C.F.R. 240.16a-1(e). An Option shall
be exercisable during the lifetime of the Optionholder only by the Optionholder
and a permitted transferee as provided herein. However, the Optionholder may, by
delivering written notice to the Company, in a form satisfactory to the Company,
designate a third party who, in the event of the death of the Optionholder,
shall thereafter be entitled to exercise the Option. Any transfer by an
Optionholder or permitted transferee as provided under this Subsection 7(d),
shall be subject to (i) the Company's obligation, if any, to execute and file
with the Securities and Exchange Commission a Registration Statement on Form S-8
or such appendices or amendments to the Company's Registration Statement on Form
S-8 currently on file as may be necessary or appropriate for the Company's
compliance thereof, and (ii) any rules and regulations, restrictions or
limitations on the rights of transfer promulgated under the Exchange Act or
Securities Act.

         (e) EXERCISE SCHEDULE. Options shall be exercisable as the shares of
Common Stock subject to the Options vest.

         (f) VESTING SCHEDULE. Options shall vest as follows:

                  (i) Initial Grants shall vest (become exercisable) over a
period of four (4) years with twelve thousand five hundred (12,500) of the
shares of Common Stock subject to each Initial Grant vesting as of twelve (12)
months after the date of the grant thereof, and an additional one thousand
forty-one (1,041) of the shares of Common Stock subject to such Initial Grant
vesting each month thereafter over the three (3) year period following such
initial twelve (12) months (with one thousand sixty-five (1,065) shares vesting
as of the 36th such month).

                  (ii) Annual Grants shall vest over a period of four (4) years
with two hundred eight (208) of the shares of Common Stock subject to each
Annual Grant vesting every month after the date of grant for the 47 month period
following such date of grant, and thereafter two hundred twenty-four (224)
shares vesting as of the 48th month after the date of grant.

         (g) EARLY EXERCISE. Options shall include a provision whereby the
Optionholder may elect at any time before the Optionholder's Continuous Service
terminates to exercise the Option as to any part or all of the shares of Common
Stock subject to the Option prior to the full vesting of the Option. Any
unvested shares of Common Stock so purchased shall be subject to a repurchase
option in favor of the Company to the extent such Option was unvested when
exercised and which corresponds with the vesting schedule applicable to such
unvested shares.

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         (h) TERMINATION OF CONTINUOUS SERVICE. In the event an Optionholder's
Continuous Service terminates (other than upon the Optionholder's death or
Disability), the Optionholder may exercise his or her Option (to the extent that
the Optionholder was entitled to exercise it as of the date of termination) but
only within such period of time ending on the earlier of (i) the date three (3)
months following the termination of the Optionholder's Continuous Service (or
such longer or shorter prior specified in the Option Agreement), or (ii) the
expiration of the term of the Option as set forth in the Option Agreement. If,
after termination, the Optionholder does not exercise his or her Option within
the time specified in the Option Agreement, the Option shall terminate.

         (i) EXTENSION OF TERMINATION DATE. If the exercise of the Option
following the termination of the Optionholder's Continuous Service (other than
upon the Optionholder's death or Disability) would be prohibited at any time
solely because the issuance of shares would violate the registration
requirements under the Securities Act, then the Option shall terminate on the
earlier of (i) the expiration of the term of the Option set forth in subsection
7(a) or (ii) the expiration of a period of three (3) months after the
termination of the Optionholder's Continuous Service during which the exercise
of the Option would not be in violation of such registration requirements.

         (j) DISABILITY OF OPTIONHOLDER. In the event an Optionholder's
Continuous Service terminates as a result of the Optionholder's Disability, the
Optionholder may exercise his or her Option (to the extent that the Optionholder
was entitled to exercise it as of the date of termination), but only within such
period of time ending on the earlier of (i) the date twelve (12) months
following such termination (or such longer or shorter period specified in the
Option Agreement), or (ii) the expiration of the term of the Option as set forth
in the Option Agreement. If, after termination, the Optionholder does not
exercise his or her Option within the time specified herein, the Option shall
terminate.

         (k) DEATH OF OPTIONHOLDER. In the event (i) an Optionholder's
Continuous Service terminates as a result of the Optionholder's death, or (ii)
the Optionholder dies within the three-month period after the termination of the
Optionholder's Continuous Service for a reason other than death, then the Option
may be exercised (to the extent the Optionholder was entitled to exercise the
Option as of the date of death) by the Optionholder's estate, by a person who
acquired the right to exercise the Option by bequest or inheritance or by a
person designated to exercise the Option upon the Optionholder's death, but only
within the period ending on the earlier of (1) the date eighteen (18) months
following the date of death (or such longer or shorter period specified in the
Option Agreement), or (2) the expiration of the term of such Option as set forth
in the Option Agreement. If, after death, the Option is not exercised within the
time specified herein, the Option shall terminate.

8.       COVENANTS OF THE COMPANY.

         (a) AVAILABILITY OF SHARES. During the terms of the Options, the
Company shall keep available at all times the number of shares of Common Stock
required to satisfy such Options.

         (b) SECURITIES LAW COMPLIANCE. The Company shall seek to obtain from
each regulatory commission or agency having jurisdiction over the Plan such
authority as may be

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required to grant Options and to issue and sell shares of Common Stock upon
exercise of the Options; provided, however, that this undertaking shall not
require the Company to register under the Securities Act the Plan, any Option or
any stock issued or issuable pursuant to any such Option. If, after reasonable
efforts, the Company is unable to obtain from any such regulatory commission or
agency the authority which counsel for the Company deems necessary for the
lawful issuance and sale of stock under the Plan, the Company shall be relieved
from any liability for failure to issue and sell stock upon exercise of such
Options unless and until such authority is obtained.

9.       USE OF PROCEEDS FROM STOCK.

         Proceeds from the sale of stock pursuant to Options shall constitute
general funds of the Company.

10.      MISCELLANEOUS.

         (a) STOCKHOLDER RIGHTS. No Optionholder shall be deemed to be the
holder of, or to have any of the rights of a holder with respect to, any shares
subject to such Option unless and until such Optionholder has satisfied all
requirements for exercise of the Option pursuant to its terms.

         (b) NO SERVICE RIGHTS. Nothing in the Plan or any instrument executed
or Option granted pursuant thereto shall confer upon any Optionholder any right
to continue to serve the Company as a Non-Employee Director or shall affect the
right of the Company or an Affiliate to terminate (i) the employment of an
Employee with or without notice and with or without cause, (ii) the service of a
Consultant pursuant to the terms of such Consultant's agreement with the Company
or an Affiliate, or (iii) the service of a Director pursuant to the Bylaws of
the Company or an Affiliate, and any applicable provisions of the corporate law
of the state in which the Company or the Affiliate is incorporated, as the case
may be.

         (c) INVESTMENT ASSURANCES. The Company may require an Optionholder, as
a condition of exercising or acquiring stock under any Option, (i) to give
written assurances satisfactory to the Company as to the Optionholder's
knowledge and experience in financial and business matters and/or to employ a
purchaser representative reasonably satisfactory to the Company who is
knowledgeable and experienced in financial and business matters and that he or
she is capable of evaluating, alone or together with the purchaser
representative, the merits and risks of exercising the Option; and (ii) to give
written assurances satisfactory to the Company stating that the Optionholder is
acquiring the stock subject to the Option for the Optionholder's own account and
not with any present intention of selling or otherwise distributing the stock.
The foregoing requirements, and any assurances given pursuant to such
requirements, shall be inoperative if (iii) the issuance of the shares upon the
exercise or acquisition of stock under the Option has been registered under a
then currently effective registration statement under the Securities Act, or
(iv) as to any particular requirement, a determination is made by counsel for
the Company that such requirement need not be met in the circumstances under the
then applicable securities laws. The Company may, upon advice of counsel to the
Company, place legends on stock certificates issued under the Plan as such
counsel deems necessary or

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appropriate in order to comply with applicable securities laws, including, but
not limited to, legends restricting the transfer of the stock.

         (d) WITHHOLDING OBLIGATIONS. The Optionholder may satisfy any federal,
state or local tax withholding obligation relating to the exercise or
acquisition of stock under an Option by any of the following means (in addition
to the Company's right to withhold from any compensation paid to the
Optionholder by the Company) or by a combination of such means: (i) tendering a
cash payment; (ii) authorizing the Company to withhold shares from the shares of
the Common Stock otherwise issuable to the Optionholder as a result of the
exercise or acquisition of stock under the Option, provided, however, that no
shares of Common Stock are withheld with a value exceeding the minimum amount of
tax required to be withheld by law; or (iii) delivering to the Company owned and
unencumbered shares of the Common Stock.

11.      ADJUSTMENTS UPON CHANGES IN STOCK.

         (a) CAPITALIZATION ADJUSTMENTS. If any change is made in the stock
subject to the Plan, or subject to any Option, without the receipt of
consideration by the Company (through merger, consolidation, reorganization,
recapitalization, reincorporation, stock dividend, dividend in property other
than cash, stock split, liquidating dividend, combination of shares, exchange of
shares, change in corporate structure or other transaction not involving the
receipt of consideration by the Company), the Plan will be appropriately
adjusted in the class(es) and maximum number of securities subject both to the
Plan pursuant to subsection 4(a) and to the nondiscretionary Options specified
in Section 5, and the outstanding Options will be appropriately adjusted in the
class(es) and number of securities and price per share of stock subject to such
outstanding Options. The Board shall make such adjustments, and its
determination shall be final, binding and conclusive. (The conversion of any
convertible securities of the Company shall not be treated as a transaction
"without receipt of consideration" by the Company.)

         (b) CHANGE IN CONTROL--DISSOLUTION OR LIQUIDATION. In the event of a
dissolution or liquidation of the Company, then all outstanding Options shall
terminate immediately prior to such event.

         (c) CHANGE IN CONTROL--ASSET SALE, MERGER, CONSOLIDATION OR REVERSE
MERGER. In the event of (i) a sale, lease or other disposition of all or
substantially all of the assets of the Company, (ii) a consolidation or merger
of the Company with or into any other corporation or other entity or person, or
any other corporate reorganization, in which the stockholders of the Company
immediately prior to such consolidation, merger or reorganization, own less than
50% of the Company's outstanding voting power of the surviving entity (or its
parent) following the consolidation, merger or reorganization, or (iii) any
transaction (or series of related transactions involving a person or entity, or
a group of affiliated persons or entities) in which in excess of fifty percent
(50%) of the Company's outstanding voting power is transferred, then with
respect to Options held by Optionholders whose Continuous Service has not
terminated, the vesting of such Options (and, if applicable, the time during
which such Options may be exercised) shall be accelerated in full, and the
Options shall terminate if not exercised (if applicable) at or prior to such
event. With respect to any other Options outstanding under the Plan, such
Options shall terminate if not exercised (if applicable) prior to such event.

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12.      AMENDMENT OF THE PLAN AND OPTIONS.

         (a) AMENDMENT OF PLAN. The Board at any time, and from time to time,
may amend the Plan. However, except as provided in Section 11 relating to
adjustments upon changes in stock, no amendment shall be effective unless
approved by the stockholders of the Company to the extent stockholder approval
is necessary to satisfy the requirements of Rule 16b-3 or any Nasdaq or
securities exchange listing requirements.

         (b) STOCKHOLDER APPROVAL. The Board may, in its sole discretion, submit
any other amendment to the Plan for stockholder approval.

         (c) NO IMPAIRMENT OF RIGHTS. Rights under any Option granted before
amendment of the Plan shall not be impaired by any amendment of the Plan unless
(i) the Company requests the consent of the Optionholder, and (ii) the
Optionholder consents in writing.

         (d) AMENDMENT OF OPTIONS. The Board at any time, and from time to time,
may amend the terms of any one or more Options; PROVIDED, HOWEVER, that the
rights under any Option shall not be impaired by any such amendment unless (i)
the Company requests the consent of the Optionholder, and (ii) the Optionholder
consents in writing.

13.      TERMINATION OR SUSPENSION OF THE PLAN.

         (a) PLAN TERM. The Board may suspend or terminate the Plan at any time.
Unless sooner terminated, the Plan shall terminate on the day before the tenth
Anniversary of the date the Plan is adopted by the Board or approved by the
stockholders of the Company, whichever is earlier. No Options may be granted
under the Plan while the Plan is suspended or after it is terminated.

         (b) NO IMPAIRMENT OF RIGHTS. Suspension or termination of the Plan
shall not impair rights and obligations under any Option granted while the Plan
is in effect except with the written consent of the Optionholder.

14.      EFFECTIVE DATE OF PLAN.

         The Plan shall become effective on the date that the Plan is adopted by
the Board, but no Option shall be exercised unless and until the Plan has been
approved by the stockholders of the Company, which approval shall be within
twelve (12) months before or after the date the Plan is adopted by the Board.

15.      CHOICE OF LAW.

         All questions concerning the construction, validity and interpretation
of this Plan shall be governed by the law of the State of California, without
regard to such state's conflict of laws rules.