EMC Extends Storage Software Revenue Lead for 6th Consecutive Quarter; Analyst Firm Reports #1 EMC Widened First Quarter Storage Software Lead Over VERITAS, IBM, Hewlett-Packard, Computer Associates.

HOPKINTON, Mass. -- EMC Corporation, the world leader in information storage and management, extended its storage software revenue lead for the sixth consecutive quarter in the first quarter of 2005, according to a report released today by IDC (a). #1 EMC had 30% revenue share in the first quarter, widening its lead over VERITAS, IBM, Hewlett-Packard and Computer Associates.

Howard Elias, EMC's Executive Vice President of Corporate Marketing and Office of Technology, said, "Our software leadership continues to be defined by our ability to manage and protect information throughout its lifecycle while enabling customers to reduce their overall IT costs, drive complexity and rigidity out of their IT infrastructures and take advantage of change. Customer appreciation for our focus and the value we place on innovation helped us to again outpace the total storage software market and deliver strong market share gains in the storage resource management and backup and archive markets, two of the hottest segments within storage software today."

First Quarter Highlights

IDC reported that EMC continued to be #1 in the Storage Resource Management (SRM) and Replication software segments, and for the first time EMC captured the #2 position in the Backup and Archive software segment (statistically tied with IBM). EMC posted greater revenue share gains than any other supplier tracked in both the SRM and Backup and Archive software segments, which represented the two largest storage software markets in the first quarter.

According to IDC, #1 EMC extended its lead in the SRM software segment to 50.6% revenue share, more than four times the share of its closest competitor. #1 EMC grew replication software revenues 15.4% in the quarter to lead with 39.5% revenue share. EMC grew its share of the Backup and Archive software segment 1.2 percentage points, moving it into the #2 position and gaining share against the segment leader. Today EMC discusses the power of integrating hardware, software and services for Backup, Recovery and Archive during an online presentation available at www.emc.com/buracast/.

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: IDC's Worldwide Quarterly Storage Software Tracker Q1 2005; All comparisons included in this release are year over year unless noted.

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.