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EMC and Oracle Team to Safeguard Customers Against Data Corruption

EMC Double Checksum is First Application Delivered for New Oracle HARD Initiative

HOPKINTON, Mass. & REDWOOD SHORES, Calif.--Nov, 5, 2001--EMC Corporation, the world leader in information storage, and Oracle Corporation (NASDAQ: ORCL - news), the world's largest enterprise software company, today unveiled EMC Double Checksum, the first software product that leverages Oracle's data integrity features for a true end-to-end safeguard against data corruption.

EMC and Oracle take data protection to a new level, reducing the risk of data corruption, business interruption, and time-consuming recovery by preventing corrupted data from spreading across an information storage network. With EMC Double Checksum, EMC is delivering the first data integrity application under Oracle's new Hardware Assisted Resilient Data (HARD) initiative, a comprehensive program designed to detect and prevent data corruptions before being written to disk.

EMC Double Checksum incorporates Oracle's data validation solution into EMC's Symmetrix Enterprise Storage systems by leveraging EMC's Enginuity(TM) operating environment. The combination of the Symmetrix architecture, Enginuity operating environment and software applications like Double Checksum form the foundation of the industry's flagship enterprise storage system.

Data corruption can have catastrophic effects on any business, potentially crippling operations during the many hours it can take to repair the database. While the Oracle database and EMC Symmetrix Enterprise Storage systems have standard features to ensure native data integrity, not all network components provide the same level of data protection. EMC and Oracle have teamed to develop a solution that guards against data corruption originating from any layer between the Oracle database and the Symmetrix system.

``EMC's new Double Checksum software responds to real customer concerns,'' said Tony Prigmore, Senior Analyst, The Enterprise Storage Group. ``By introducing an additional layer of data integrity assurance, EMC and Oracle have developed a vital tool for ensuring the availability of customers' most important business data. Software like this can help customers manage information assets more efficiently and profitably.''

``Today's complex networked storage environments require data to flow through many components, including servers, storage systems, switches and host adapters,'' said Chuck Hollis, EMC Vice President of Markets and Products. ``Each component has the potential to compromise the integrity of data before it reaches the storage system. With EMC Double Checksum software, data corruption can be identified and corrected, saving businesses millions in compromised information, added service costs and lost revenue.''

``Data loss can seriously handicap a business,'' said Robert Shimp, Vice President of Database Product Marketing for Oracle. ``We're delighted that EMC has joined in our HARD initiative. Together we have developed technology that combats the operating system bugs and hardware errors that can cause data corruption.''

An Extra Level of Data Protection

The Oracle database management system includes a standard data integrity feature that calculates a checksum - a unique identifier for each write request. With EMC Double Checksum, once the data passes through the multiple components of the storage network and reaches the EMC Symmetrix Enterprise Storage system, the Symmetrix calculates it's own ``double check'' checksum and compares it with Oracle's. If the two match, the data is committed to disk. In the event that data is altered or compromised between the server and the Symmetrix, the system administrator can either take immediate action or initiate a follow-up repair procedure.

Data corruption is highly unlikely anywhere along the storage network. However, when it does occur, it can be costly because the corrupted data may not be detected for a period of time. When this occurs, the database must be recovered from a backup taken prior to the corruption. This backed-up data may only be a few hours old, but in some cases, may be days or weeks old, which can drastically slow down a business.

About EMC

EMC Corporation is the world leader in information storage systems, software, networks and services, providing the information infrastructure for a connected world. Information about EMC's products and services can be found at http://www.EMC.com.

About Oracle

Oracle is the world's largest enterprise software company. For more information about Oracle visit our website at www.oracle.com.

EMC, Symmetrix and Enginuity are registered trademarks and Double Checksum is a trademark of EMC Corporation. Other trademarks are the property of their respective owners.






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