Exhibit 4.1


                       EMC CORPORATION

       1993 STOCK OPTION PLAN, as amended May 3, 2000

1.   PURPOSE.

     The purpose of the EMC Corporation 1993 Stock Option
Plan is to enable EMC Corporation to provide a special
incentive to a limited number of key employees of the
Company and its Subsidiaries, if any, who are in a position
to have a significant effect upon the Company's business and
earnings.  In order to accomplish this purpose, the Plan
authorizes the grant to such key employees of options to
purchase Common Stock of the Company.  Increased ownership
of Common Stock will provide such key employees with an
additional incentive to take into account the long-term
interests of the Company.

2.   DEFINITIONS.

     As used herein, the following words or terms have the
meanings set forth below.  The masculine gender is used
throughout the Plan but is intended to apply to members of
both sexes.

     2.1  "Board of Directors" means the Board of Directors
of the Company.

     2.2  "Code" means the Internal Revenue Code of 1986, as
amended from time to time, or any successor statute.

     2.3  "Committee" means the Committee appointed by the
Board of Directors to administer the Plan or the Board of
Directors as a whole if no appointment is made.

     2.4  "Common Stock" means the Common Stock of the
Company.

     2.5  "Company" means EMC Corporation, a corporation
established under the laws of The Commonwealth of
Massachusetts.

     2.6  "Fair Market Value" in the case of a share of
Common Stock on a particular day, means the fair market
value as determined from time to time by the Board of
Directors or, where appropriate, by the Committee, taking
into account all information which the Board of Directors,
or the Committee, considers relevant.

     2.7  "Incentive Stock Option" means a stock option that
satisfies the requirements of Section 422 of the Code.

     2.8  "Participant" means an individual holding a stock
option or stock options granted to him under the Plan.

     2.9  "Plan" means the EMC Corporation 1993 Stock Option
Plan set forth herein.

     2.10 "Subsidiary" or "Subsidiaries" means a corporation
or corporations in which the Company owns, directly or
indirectly, stock possessing 50 percent or more of the total
combined voting power of all classes of stock.

     2.11 "Ten Percent Stockholder" means any person who, at
the time an option is granted, owns or is deemed to own
stock (as determined in accordance with Sections 422 and 424
of the Code) possessing more than ten percent (10%) of the
total combined voting power of all classes of stock of the
Company or its parent or a subsidiary.

3.   ADMINISTRATION.

     3.1  The Plan shall be administered by the Committee
and, to the extent provided herein, the Board of Directors.
A majority of the members of the Committee shall constitute
a quorum, and all determinations of the Committee shall be
made by a majority of its members.  Any determination of the
Committee under the Plan may be made without notice or
meeting of the Committee by a writing signed by a majority
of the Committee members.

     3.2  Subject to the provisions set forth herein, each
of the Committee and the Board of Directors shall have full
authority to determine the provisions of options to be
granted under the Plan.  Subject to the provisions set forth
herein, the Committee shall have full authority to interpret
the terms of the Plan and of options granted under the Plan,
to adopt, amend and rescind rules and guidelines for the
administration of the Plan and for its own acts and
proceedings and to decide all questions and settle all
controversies and disputes which may arise in connection
with the Plan; provided, however, that any change to the
terms of an option granted hereunder shall be approved by
the Board of Directors to the extent such change would be
deemed to be a new option grant or such terms relate to a
subsequent transaction that would not be exempt from Section
16(b) of the Securities Exchange Act of 1934 in the absence
of such approval.

     3.3  The decision of the Committee or the Board of
Directors, as applicable, on any matter as to which the
Committee or the Board of Directors, as applicable, is given
authority under subsection 3.2 shall be final and binding on
all persons concerned.

     3.4  Nothing in the Plan shall be deemed to give any
officer or employee, or his legal representatives or
assigns, any right to participate in the Plan, except to
such extent, if any, as the Committee or the Board, as
applicable, may have determined or approved pursuant to the
provisions of the Plan.

4.   SHARES SUBJECT TO THE PLAN.

     4.1  The maximum number of shares of Common Stock that
may be delivered upon the exercise of options granted under
the Plan shall be 180,000,000, subject to adjustment in
accordance with the provisions of Section 8.

     4.2  If any option granted under the Plan terminates
without having been exercised in full (including an option
which terminates by agreement between the Company and the
Participant), or if shares of Common Stock are reacquired by
the Company upon the rescission of an exercise of an option,
the number of shares of Common Stock as to which an option
has not been exercised prior to termination, or have been
reacquired upon the rescission of an option, shall be
available for future grants within the limits set forth in
subsection 4.1.

     4.3  Shares of Common Stock delivered upon the exercise
of options shall consist of shares of authorized and
unissued Common Stock, except that the Board of Directors
may from time to time in its discretion determine in any
case the shares to be so delivered shall consist of shares
of authorized and issued Common Stock reacquired by the
Company and held in its Treasury.  No fractional shares of
Common Stock shall be delivered upon the exercise of an
option.

5.   ELIGIBILITY FOR OPTIONS.

     Employees eligible to receive options under the Plan
shall be those key employees of the Company and its
Subsidiaries, if any, who, in the opinion of the Committee,
are in a position to have a significant effect upon the
Company's business and earnings.  Members of the Board of
Directors of the Company or a Subsidiary who are not
employed as regular salaried officers or employees of the
Company or a Subsidiary may not participate in the Plan.

6.   GRANT OF OPTIONS.

     6.1  From time to time while the Plan is in effect,
each of the Committee and the Board of Directors may, in its
absolute discretion, select from among the persons eligible
to receive options (including persons to whom options were
previously granted) those persons to whom options are to be
granted.

     6.2  Each of the Committee and the Board of Directors
shall, in its absolute discretion, determine the number of
shares of Common Stock to be subject to each option granted
by it under the Plan.

     6.3  No Incentive Stock Option may be granted under the
Plan after May 12, 2003, but options theretofore granted may
extend beyond that date.

7.   PROVISIONS OF OPTIONS.

     7.1  Incentive Stock Options or Other Options.  Options
granted under the Plan may be either Incentive Stock Options
or options which do not qualify as Incentive Stock Options,
as the Committee or the Board of Directors shall determine
at the time of each grant of options hereunder.

     7.2  Stock Option Certificates or Agreements.  Options
granted under the Plan shall be evidenced by certificates or
agreements in such form as the Committee shall from time to
time approve.  Such certificates or agreements shall comply
with the terms and conditions of the Plan and may contain
such other provisions not inconsistent with the terms and
conditions of the Plan as the Committee shall deem
advisable.  In the case of options intended to qualify as
Incentive Stock Options, the certificates or agreements
shall contain such provisions relating to exercise and other
matters as are required of incentive stock options under the
Code.

     7.3  Terms and Conditions.  All options granted under
the Plan shall be subject to the following terms and
conditions to the extent applicable and to such other terms
and conditions not inconsistent therewith as the Committee
or the Board of Directors shall determine:

         7.3.1   Exercise Price.  The exercise price per
     share of Common Stock with respect to each option shall
     be as determined by the Committee but in the case of an
     Incentive Stock Option not less than 100% (110% in the
     case of an Incentive Stock Option granted to a Ten
     Percent Stockholder) of the Fair Market Value per share
     at the time the option is granted.  In the case of an
     option which does not qualify as an Incentive Stock
     Option, the exercise price per share of Common Stock
     shall be not less than par value.

         7.3.2   Value of Shares of Common Stock Subject to
     Incentive Stock Options.  Each eligible employee may be
     granted Incentive Stock Options only to the extent
     that, in the aggregate under this Plan and all
     incentive stock option plans of the Company and any
     related corporation, such Incentive Stock Options do
     not become exercisable for the first time by such
     employee during any calendar year in a manner which
     would entitle the employee to purchase more than
     $100,000 in fair market value (determined at the time
     the Incentive Stock Options were granted) of Common
     Stock in that year.  Any options granted to an employee
     in excess of such amount will be granted as Non-
     Qualified Options.

         7.3.3   Period of Options.  An option shall be
     exercisable during such period of time as the Committee
     or Board of Directors may specify (subject to
     subsection 7.4 below), but in the case of an Incentive
     Stock Option not after the expiration of ten years
     (five years in the case of an Incentive Stock Option
     granted to a Ten Percent Stockholder) from the date the
     option is granted.

         7.3.4   Exercise of Options.

               7.3.4.1   Each option shall be made
          exercisable at such time or times as the Committee
          or the Board of Directors shall determine.  In the
          case of an option made exercisable in
          installments, the Committee or the Board of
          Directors may later determine to accelerate the
          time at which one or more of such installments may
          be exercised.

               7.3.4.2   Any exercise of an option shall be
          in writing signed by the proper person and
          delivered or mailed to the General Counsel of the
          Company, accompanied by an option exercise notice
          and payment in full for the number of shares in
          respect to which the option is exercised.

               7.3.4.3   In the event an option is exercised
          by the executor or administrator of a deceased
          Participant, or by the person or persons to whom
          the option has been transferred by the
          Participant's will or the applicable laws of
          descent and distribution, the Company shall be
          under no obligation to deliver stock thereunder
          until the Company is satisfied that the person or
          persons exercising the option is or are the duly
          appointed executor or administrator of the
          deceased Participant or the person or persons to
          whom the option has been transferred by the
          Participant's will or by the applicable laws of
          descent and distribution.

               7.3.4.4   The Committee or the Board of
          Directors may at the time of grant condition the
          exercise of an option upon agreement by the
          Participant to subject the Common Stock to any
          restrictions on transfer or repurchase rights in
          effect on the date of exercise, upon
          representations of continued employment and upon
          other terms not inconsistent with this Plan.  Any
          such conditions shall be set forth in the option
          certificate or other document evidencing the
          option.

               7.3.4.5   In the case of an option that is
          not an Incentive Stock Option, the Committee shall
          have the right to require that the individual
          exercising the option to remit to the Company an
          amount sufficient to satisfy any federal, state,
          or local withholding tax requirements (or makes
          other arrangements satisfactory to the Company
          with regard to such taxes) prior to the delivery
          of any Common Stock pursuant to the exercise of
          the option.  In the case of an Incentive Stock
          Option, if at the time the Incentive Stock Option
          is exercised the Committee determines that under
          applicable law and regulations the Company could
          be liable for the withholding of any federal or
          state tax with respect to a disposition of the
          Common Stock received upon exercise, the Committee
          may require as a condition of exercise that the
          individual exercising the Incentive Stock Option
          agree (i) to inform the Company promptly of any
          disposition (within the meaning of Section 422 (a)
          (1) of the Code and the regulations thereunder) of
          Common Stock received upon exercise, and (ii) to
          give such security as the Committee deems adequate
          to meet the potential liability of the Company for
          the withholding of tax, and to augment such
          security from time to time in any amount
          reasonably deemed necessary by the Committee to
          preserve the adequacy of such security.

                    7.3.4.6  In the case of an option that
          is exercised by an individual that is subject to
          taxation in a foreign jurisdiction, the Committee
          shall have the right to require the individual
          exercising the option to remit to the Company an
          amount sufficient to satisfy any federal or
          withholding requirement of that foreign
          jurisdiction (or make other arrangements
          satisfactory to the Company with regard to such
          taxes prior to the delivery of any Common Stock
          pursuant to the exercise of the option).

          7.3.5   Payment for and Delivery of Stock.   The
     shares of stock purchased on any exercise of an option
     granted hereunder shall be paid for in full in cash or,
     if expressly permitted by the terms of the option, in
     shares of unrestricted Common Stock at the time of such
     exercise or, if so permitted, a combination of such
     cash and Common Stock.  A Participant shall not have
     the rights of a stockholder with respect to awards
     under the Plan except as to stock actually issued to
     him.

          7.3.6   Listing of Stock, Withholding and Other
     Legal Requirements.   The Company shall not be
     obligated to deliver any stock until all federal and
     state laws and regulations which the Company may deem
     applicable have been complied with, nor, in the event
     the outstanding Common Stock is at the time listed upon
     any stock exchange, until the stock to be delivered has
     been listed or authorized to be added to the list upon
     official notice of issuance to such exchange.  In
     addition, if the shares of stock subject to any option
     have not been registered in accordance with the
     Securities Act of 1933, as amended, the Company may
     require the person or persons who wishes or wish to
     exercise such option to make such representation or
     agreement with respect to the sale of stock acquired on
     exercise of the option as will be sufficient, in the
     opinion of the Company's counsel, to avoid violation of
     said Act, and may also require that the certificates
     evidencing said stock bear an appropriate restrictive
     legend.

               7.3.7   Non-transferability of Options.   No
     option may be transferred by the Participant otherwise
     than by will, by the laws of descent and distribution
     or pursuant to a qualified domestic relations order,
     and during the Participant's lifetime the option may be
     exercised only by him or her; provided, however, that
     the Board of Directors or the Committee, as applicable,
     in its discretion, may allow for transferability of non-
     qualified stock options by the Participant to
     "Immediate Family Members." Immediate Family Members
     means children, grandchildren, spouse or common law
     spouse, siblings or parents of the Participant or to
     bona fide trusts, partnerships or other entities
     controlled by and of which the beneficiaries are
     Immediate Family Members of the Participant.  Any
     option grants that are transferable are further
     conditioned on the Participant and Immediate Family
     Members agreeing to abide by the Company's then current
     stock option transfer guidelines.

          7.3.8   Death.   If a Participant dies at a time
     when he is entitled to exercise an Incentive Stock
     Option, then at any time or times within three years
     after his death such Incentive Stock Option may be
     exercised, as to all or any of the shares which the
     Participant was entitled to purchase thereunder
     immediately prior to his death, by his executor or
     administrator or the person or persons to whom the
     Incentive Stock Option is transferred by will or the
     applicable laws of descent and distribution, and except
     as so exercised such Incentive Stock Option shall
     expire at the end of such three-year period.  In no
     event, however, may any Incentive Stock Option granted
     under the Plan be exercised after the expiration of ten
     years (five years in the case of an Incentive Stock
     Option granted to a Ten Percent Stockholder) from the
     date the Incentive Stock Option was granted.

          7.3.9   Termination of Employment.   If the
     employment of a Participant terminates for any reason
     other than his death, all options held by the
     Participant shall thereupon expire at 5 p.m. United
     States eastern time on the date of termination unless
     the option by its terms, or the Committee or the Board
     of Directors by resolution, shall expressly allow the
     Participant to exercise any or all of the options held
     by him after termination; provided, that
     notwithstanding any such express allowance, any such
     option which is an Incentive Stock Option shall in any
     event expire no later than three months after such
     termination of employment, or after the expiration of
     ten years (five years in the case of an Incentive Stock
     Option granted to a Ten Percent Stockholder) from the
     date the Incentive Stock Option was granted, whichever
     occurs first.  The Company shall have the sole
     discretion to set the date of termination for purposes
     of the Plan, without regard to any notice period or
     other obligation under the labor laws of the
     jurisdiction where the Participant is employed.  If the
     Committee or the Board of Directors so decides, an
     option may  provide that a leave of absence granted by
     the Company or Subsidiary is not a termination of
     employment for the purpose of this subsection 7.3.9,
     and in the absence of such a provision the Committee
     may in any particular case determine that such a leave
     of absence is not a termination of employment for such
     purpose. The Committee shall also determine all other
     matters relating to continuous employment.

          7.3.10   Cancellation and Rescission of Options.
     The following provisions of this Section 7.3.10 shall
     apply to options granted on or after July 1, 1998 to
     (i) Participants who are classified by the Company or a
     Subsidiary as an executive officer, senior officer, or
     officer (collectively, an "Officer") of the Company or
     a Subsidiary; and (ii) certain other Participants
     designated by the Committee or the Board of Directors
     to be subject to the terms of this Section 7.3.10 (such
     designated Participants together with Officers referred
     to collectively as "Senior Participants").  The
     Committee or the Board of Directors may cancel,
     rescind, suspend or otherwise limit or restrict any
     unexpired option at any time if the Senior Participant
     engages in "Detrimental Activity" (as defined below).
     Furthermore, in the event a Senior Participant engages
     in Detrimental Activity  at any time prior to or during
     the six months after any exercise of an option, such
     exercise may be rescinded until the later of (i) two
     years after such exercise or (ii) two years after such
     Detrimental Activity.  Upon such rescission, the
     Company at its sole option may require the Senior
     Participant to (i) deliver and transfer to the Company
     the shares of Common Stock received by the Senior
     Participant upon such exercise, (ii) pay to the Company
     an amount equal to any realized gain received by the
     Senior Participant from such exercise, or (iii) pay to
     the Company an amount equal to the market price (as of
     the exercise date) of the Common Stock acquired upon
     such exercise minus the respective exercise price.  The
     Company shall be entitled to set-off any such amount
     owed to the Company against any amount owed to the
     Senior Participant by the Company.   As used in this
     subsection 7.3.10, "Detrimental Activity" shall
     include: (i) the failure to comply with the terms of
     the Plan or certificate or agreement evidencing the
     option; (ii) the failure to comply with any term set
     forth in the Company's Key Employee Agreement
     (irrespective of whether the Senior Participant is a
     party to the Key Employee Agreement); (iii) any
     activity that results in termination of the Senior
     Participant's employment for cause; (iv) a violation of
     any rule, policy, procedure or guideline of the
     Company; or (v) the Senior Participant being convicted
     of, or entering a guilty plea with respect to a crime
     whether or not connected with the Company.

               7.3.11  Jurisdiction and Governing Law.  The
     parties submit to the exclusive jurisdiction and venue
     of the federal or state courts of the Commonwealth of
     Massachusetts, County of Middlesex, to resolve issues
     that may arise out of or relate to the Plan or the same
     subject matter.  The Plan shall be governed by the laws
     of the Commonwealth of Massachusetts, excluding its
     conflicts or choice of law rules or principles that
     might otherwise refer construction or interpretation of
     this Plan to the substantive law of another
     jurisdiction.

     7.4  Authority of the Committee.   The Committee shall
have the authority, either generally or in particular
instances, to waive compliance by a Participant with any
obligation to be performed by him under an option and to
waive any condition or provision of an option, except that
the Committee may not (i) increase the total number of
shares covered by any Incentive Stock Option (except in
accordance with Section 8), (ii) reduce the option price per
share of any Incentive Stock Option (except in accordance
with Section 8) or (iii) extend the term of any Incentive
Stock Option to more than ten years, subject, however, to
the provisions of Section 10.

8.   CHANGES IN STOCK.

     In the event of a stock dividend, stock split or other
change in corporate structure or capitalization affecting
the Common Stock that becomes effective after the adoption
of the Plan by the Board of Directors, the Committee shall
make appropriate adjustments in (i) the number and kind of
shares of stock on which options may thereafter be granted
hereunder, (ii) the number and kind of shares of stock
remaining subject to each option outstanding at the time of
such change and (iii) the option price.  The Committee's
determination shall be binding on all persons concerned.
Subject to any required action by the stockholders, if the
Company shall be the surviving corporation in any merger or
consolidation (other than a merger or consolidation in which
the Company survives but in which a majority of its
outstanding shares are converted into securities of another
corporation or are exchanged for other consideration), any
option granted hereunder shall pertain and apply to the
securities which a holder of the number of shares of stock
of the Company then subject to the option would have been
entitled to receive, but a dissolution or liquidation of the
Company or a merger or consolidation in which the Company is
not the surviving corporation or in which a majority of its
outstanding shares are so converted or exchanged shall cause
every option hereunder to terminate; provided that if any
such dissolution, liquidation, merger or consolidation is
contemplated, the Company shall either arrange for any
corporation succeeding to the business and assets of the
Company to issue to the Participants replacement options
(which, in the case of Incentive Stock Options, satisfy, in
the determination of the Committee, the requirements of
Section 424 of the Code) on such corporation's stock which
will to the extent possible preserve the value of the
outstanding options or shall make the outstanding options
fully exercisable at least 20 days before the effective date
of any such dissolution, liquidation, merger or
consolidation.  The existence of the Plan shall not prevent
any such change or other transaction and no Participant
thereunder shall have any right except as herein expressly
set forth.

9.   EMPLOYMENT RIGHTS.

     Neither the adoption of the Plan nor any grant of
options confers upon any employee of the Company or a
Subsidiary any right to continued employment with the
Company or a Subsidiary, as the case may be, nor does it
interfere in any way with the right of the Company or a
Subsidiary to terminate the employment of any of its
employees at any time.

10.  DISCONTINUANCE, CANCELLATION, AMENDMENT AND
     TERMINATION.

     The Committee or the Board of Directors may at any time
discontinue granting options under the Plan and, with the
consent of the Participant, may at any time cancel an
existing option in whole or in part and grant another option
to the Participant for such number of shares as the
Committee or the Board of Directors specifies.  The Board of
Directors may at any time or times amend the Plan for the
purpose of satisfying the requirements of any changes in
applicable laws or regulations or for any other purpose
which may at the time be permitted by law or may at any time
terminate the Plan as to any further grants of options,
provided that no such amendment shall without the approval
of the stockholders of the Company (a) increase the maximum
number of shares available under the Plan, (b) change the
group of employees eligible to receive options under the
Plan, (c) reduce the exercise price of outstanding incentive
options or reduce the price at which incentive options may
be granted, (d) extend the time within which options may be
granted, (e) alter the Plan in such a way that incentive
options granted or to be granted hereunder would not be
considered incentive stock options under Section 422 of the
Code, or (f) amend the provisions of this Section 10, and no
such amendment shall adversely affect the rights of any
employee (without his consent) under any option previously
granted.

11.  EFFECTIVE DATE.

     The Plan became effective immediately upon its approval
by the stockholders of the Company at the Annual Meeting on
May 12, 1993.