EMC Extended Storage Management Software Market Lead in 2004, Analyst Firm Reports; EMC Posted Largest Share Gain Among the Ten Largest Suppliers; #1 for Sixth Consecutive Year.

HOPKINTON, Mass. -- EMC Corporation, the world leader in information storage and management, was the #1 provider of storage management software based on new license revenue for the sixth consecutive year in 2004 and gained the most revenue share among the ten largest providers, according to a new report released by Gartner (a). In 2004 EMC extended its worldwide storage management software lead by more than two percentage points, reaching 29.5% new license revenue market share. EMC grew new storage management software license revenue 21.2% during the year, nearly twice the market growth rate of 12.3%.

Howard Elias, EMC Executive Vice President of Corporate Marketing and Office of Technology, said, "EMC's storage and information management software continues to differentiate us from the storage software industry pack. We believe our 2004 growth was fueled by our ability to help customers of all sizes save money, reduce complexity, mitigate risk, comply with government regulations, and better support their businesses. We expect this trend to accelerate as we leverage our broadened portfolio of systems, software and services to help customers implement information lifecycle management."

The new Gartner report comes less than a week after EMC reported results for the first quarter of 2005. EMC's software license and maintenance revenues grew 26% compared to the first quarter of 2004, representing 37% of total EMC revenues (Read "EMC Reports First Quarter Results" at http://www.emc.com/Q105).

About EMC

EMC Corporation (NYSE: EMC) is the world leader in products, services and solutions for information storage and management that help organizations extract the maximum value from their information, at the lowest total cost, across every point in the information lifecycle. Information about EMC's products and services can be found at www.EMC.com.

EMC is a registered trademark of EMC Corporation. Other trademarks are the property of their respective owners.

(a) Source: Gartner Dataquest "Market Share: Storage Management Software, Worldwide, 2004", C. DiCenzo. April 2005.

This release contains "forward-looking statements" as defined under the Federal Securities Laws. Actual results could differ materially from those projected in the forward-looking statements as a result of certain risk factors, including but not limited to: (i) adverse changes in general economic or market conditions; (ii) delays or reductions in information technology spending; (iii) risks associated with acquisitions and investments, including the challenges and costs of integration, restructuring and achieving anticipated synergies; (iv) competitive factors, including but not limited to pricing pressures and new product introductions; (v) the relative and varying rates of product price and component cost declines and the volume and mixture of product and services revenues; (vi) component and product quality and availability; (vii) the transition to new products, the uncertainty of customer acceptance of new product offerings and rapid technological and market change; (viii) insufficient, excess or obsolete inventory; (ix) war or acts of terrorism; (x) the ability to attract and retain highly qualified employees; (xi) fluctuating currency exchange rates; and (xii) other one-time events and other important factors disclosed previously and from time to time in EMC's filings with the U.S. Securities and Exchange Commission. EMC disclaims any obligation to update any such forward-looking statements after the date of this release.