EXHIBIT 99.2


                               McDATA CORPORATION

                             CONSENT OF STOCKHOLDER

            The undersigned stockholder of McDATA Corporation, a Delaware
  corporation ("McDATA"), hereby authorizes and approves, by consent in writing
  pursuant to Section 228 of the General Corporation Law of the State of
  Delaware (the "DGCL"):

            I.  with respect to all of the shares of Class A Common Stock, par
       value $0.001 per share, of McDATA ("McDATA Class A Common Stock"), Class
       B Common Stock, par value $0.001 per share, of McDATA ("McDATA Class B
       Common Stock"), Series A Convertible Preferred Stock, par value $0.001
       per share, of McDATA ("McDATA Series A Preferred Stock") and Series B
       Convertible Preferred Stock, par value $0.001 per share, of McDATA
       ("McDATA Series B Preferred Stock"), of which the undersigned was the
       record holder at the close of business on October 20, 1995 (the "Record
       Date"):

                  A.  the Agreement and Plan of Merger dated as of October 25,
            1995, (the "Merger Agreement") among McDATA, EMC Corporation, a
            Massachusetts corporation ("EMC"), and EMC Merger Corporation 1995,
            a Delaware corporation and a wholly-owned subsidiary of EMC ("Sub");

                  B.  the merger of Sub with and into McDATA pursuant to the
            Merger Agreement (the "Merger"), resulting in McDATA becoming a
            wholly owned subsidiary of EMC; and

                  C.  the waiver of any notices, requirements and waiting
            periods called for in McDATA's Amended and Restated Certificate of
            Incorporation or in the DGCL, including any requirement that McDATA
            may not consummate the Merger before the expiration of any time
            period provided therein; and

            II.  with respect to all of the shares of McDATA Series A Preferred
       Stock and McDATA Series B Preferred Stock, of which the undersigned was
       the record holder at the close of business on the Record Date, the
       conversion of all outstanding shares of McDATA Series A Preferred and
       McDATA Series B Preferred into shares of McDATA Class A Common Stock;

  all as more fully described in the Consent Solicitation/Prospectus dated
  ___________, 1995 (the "Consent Solicitation").

            The undersigned's approval of the foregoing matters shall constitute
  approval of all of the matters contemplated by the Merger Agreement as
  described in the Consent Solicitation, including but not limited to the
  following:

            (i)   the assumption by the undersigned of the undersigned's
  obligations pursuant to Article VIII of the Merger Agreement relating to the
  indemnification by the McDATA stockholders of EMC and its affiliates and their
  respective officers, directors, employees and agents (the "Indemnification
  Obligations");

 
            (ii)  the appointment of John F. McDonnell to act as the
  undersigned's representative ("McDATA Representative") pursuant to the Merger
  Agreement and the Exchange and Escrow Agreement (as defined in the Merger
  Agreement);

            (iii) that the McDATA Representative and his successors will not be
  liable to the undersigned for any action taken or omitted to be taken by him
  in good faith and believed by him to be authorized by the Merger Agreement or
  the Exchange and Escrow Agreement or within the rights or powers conferred
  upon him thereunder, nor for any action taken or omitted to be taken by him in
  good faith and in accordance with advice of counsel, nor for any mistakes of
  fact or error of judgment or for any acts or omissions of any kind unless
  caused by his own willful misconduct, gross negligence or bad faith.

            By execution hereof, the undersigned acknowledges receipt of the
  Consent Solicitation (which includes a copy of the Merger Agreement) and
  acknowledges and agrees that as a result of signing this Consent, the
  undersigned hereby waives and loses any right to dissent from the proposed
  Merger and obtain payment for the undersigned's shares of McDATA capital stock
  pursuant to Section 262 of the DGCL.

            Effective upon the consummation of the Merger and as a result of the
  execution of this Consent, the undersigned hereby waives any rights or claims
  (known or unknown) the undersigned may have as a stockholder of McDATA against
  McDATA or any of its officers, directors, shareholders, affiliates,
  successors, or assigns, including any rights to accrued and unpaid dividends
  on McDATA Class A Common Stock or McDATA Class B Common Stock, except for such
  rights or claims as are expressly set forth in the Merger Agreement.

            This Consent is one of several consents, identical in form to this
  Consent, that are being signed by the holders of record on the Record Date of
  issued and outstanding shares of capital stock of McDATA, all of which
  Consents taken together are intended to constitute action by the stockholders
  of McDATA by consent in writing without a meeting pursuant to Section 228 of
  the DGCL.


                                 Signature of Stockholder:

                                 Print Name of Stockholder:

                                 Signature if held jointly:

                                 Print name of joint holder:

                                 Dated  __________, 1995

  Shares beneficially owned:

  ____________________ shares of Class A Common Stock

  ____________________ shares of Class B Common Stock

  ____________________ shares of Series A Preferred Stock

  ____________________ shares of Series B Preferred Stock

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  Please sign exactly as name appears on your certificate(s).  When shares are
  held by joint tenants, both should sign.  When signing as executor,
  administrator, trustee or guardian, please give full title as such.  If a
  corporation, please sign in full corporate name by President or other
  authorized officer.  If a partnership, please sign in partnership name by
  authorized person.

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