Press Release

EMC Completes Tender Offer for Isilon Systems

Acquisition Expected To Close Tomorrow

HOPKINTON, Mass., December 20, 2010 - 

EMC Corporation (NYSE: EMC), the world leader in information infrastructure solutions, today announced the successful completion of its tender offer for all outstanding shares of common stock of Isilon Systems, Inc. (NASDAQ: ISLN).

The tender offer expired at 12:00 midnight Eastern Standard Time (EST) on December 17, 2010. Isilon stockholders tendered a total of approximately 63,988,828 shares of Isilon common stock in the offer, representing approximately 95.5% of the outstanding Isilon shares. Together with the 0.4% of outstanding Isilon shares previously held by EMC, EMC now controls approximately 95.9% of Isilon shares outstanding. EMC has accepted for payment all shares tendered in the offer.

EMC expects to effect a second-step merger and complete its acquisition of Isilon tomorrow. All remaining outstanding Isilon shares, other than those held by Isilon, EMC or their respective wholly-owned subsidiaries and stockholders who properly perfect appraisal rights under Delaware law, will be converted in the merger into the right to receive $33.85 per share in cash.

Following the merger, Isilon common stock will cease to be traded on The NASDAQ Stock Market. Isilon will become a division within EMC's Information Infrastructure Products business. Sujal Patel, Isilon Founder, President and CEO, will report directly to Pat Gelsinger, President and Chief Operating Officer, EMC Information Infrastructure Products.

About EMC

EMC Corporation (NYSE: EMC) is the world's leading developer and provider of information infrastructure technology and solutions that enable organizations of all sizes to transform the way they compete and create value from their information. Information about EMC's products and services can be found at

Press Contacts

Dave Farmer

EMC is a registered trademark of EMC Corporation in the United States and/or other countries. All other trademarks used are the property of their respective owners.

Forward-Looking Statements

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) our ability to protect our proprietary technology; (iv) risks associated with managing the growth of our business, including risks associated with acquisitions and investments and the challenges and costs of integration, restructuring and achieving anticipated synergies; (v) fluctuations in VMware, Inc.'s operating results and risks associated with trading of VMware stock; (vi) competitive factors, including but not limited to pricing pressures and new product introductions; (vii) the relative and varying rates of product price and component cost declines and the volume and mixture of product and services revenues; (viii) component and product quality and availability; (ix) the transition to new products, the uncertainty of customer acceptance of new product offerings and rapid technological and market change; (x) insufficient, excess or obsolete inventory; (xi) war or acts of terrorism; (xii) the ability to attract and retain highly qualified employees; (xiii) fluctuating currency exchange rates; and (xiv) 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.