New WD Caviar® RAID Edition Serves Up RAID-compatibility Technology And One Million Hours Mean Time Between Failure for Server-class Reliability

LAKE FOREST, Calif. - Aug. 3, 2004 - Western Digital Corp. (NYSE: WDC) today introduced WD Caviar® RAID Edition (RE) hard drives, which are designed and manufactured to enterprise-class standards for high reliability in a host of server applications including e-mail, file, video and Web servers, and demanding environments such as scientific computing, enterprise backup, document image management, engineering data management. Currently shipping in volume, WD Caviar RE drives are equipped with either Serial ATA (SATA) or EIDE interfaces and 7,200 RPM spin speed.

Industry research firm Gartner Dataquest estimates compound annual growth rate of 26.1 percent from 2004 through 2008 for consumption of desktop-class ATA-interface hard drives in multi-user storage systems. (Gartner Dataquest, March 2004)

With one million hours MTBF (Mean Time Between Failure), WD Caviar RE drives offer systems builders and storage system manufacturers high reliability in high-duty cycle applications, where around-the-clock performance and high reliability are critical. WD also built into its new RE drives a Time Limited Error Recovery (TLER) feature, which helps prevent drive fallout caused by extended desktop hard drive error-recovery processes. WD Caviar RE drives carry a three-year warranty and are offered in capacities of 250, 160 and 120 GB.

WD's FIT Lab™ (Functional Integrity Testing Lab) performed rigorous and extensive testing in order to certify one million hours MTBF and ensure its new RE hard drives are optimized for use in server environments.

Before WD's development of TLER, systems integrators and storage manufacturers commonly experienced hard drive fallout when using desktop drives in RAID (Redundant Array of Independent Disks) applications. By taking into account the distinct differences between single-user and multi-user workloads, WD Caviar RE drives implement RAID-specific TLER to improve drive compatibility with RAID controllers and significantly improve system reliability.

"As Rackable Systems continues to lead the market in large-scale deployment of data server products, we are confident that WD's new RAID Edition drives will enhance our product offerings and bolster our ability to meet the most demanding customer requirements," noted Geoff Noer, senior director of storage products at Rackable Systems.

"The RAID optimized specification of the new WD Caviar RE drives, together with the product's increased reliability made the qualification of the Western Digital product for our new SilverSTOR iSAN Storage Appliance range a very obvious choice," said Gareth Jackson, director of technology for Evesham Technology, a U.K.-based leading provider of IT infrastructure solutions. "It is our intention to use WD Caviar RE drives in all our high capacity storage and server products."

"Last year our customers were using high capacity desktop drives for RAID applications in enterprise environments. Based on customer feedback, Western Digital set out to improve current 7,200 RPM EIDE and SATA desktop-class hard drives by focusing on reliability and the unique features enterprise environments require of large capacity drives," stated William Johns, vice president and general manager for Western Digital's enterprise and entertainment group. "In designing WD Caviar RE drives, we acted upon customer input and extensive experience gained from our enterprise-class WD Raptor™ drives to develop a high capacity, highly reliable hard drive perfectly suited for RAID server applications."

Availability & Pricing

WD Caviar RE hard drives are currently shipping in volume and are available through Western Digital's distribution network. Estimated street pricing for WD Caviar RE 250 GB capacity with SATA interface (model no. WD2500SD) is $215 USD and WD Caviar RE 250 GB with EIDE interface (model no. WD2500SB) is $205 USD. Additional information about WD Caviar RE hard drives may be found on the company's Web site at http://www.westerndigital.com/products.

About Western Digital

Western Digital, one of the storage industry's pioneers and long-time leaders, provides products and services for people and organizations that collect, manage and use digital information. The company produces reliable, high-performance hard drives that keep users' data close-at-hand and secure from loss.

Western Digital was founded in 1970. The company's storage products are marketed to leading systems manufacturers and selected resellers under the Western Digital brand name. Visit the Investor section of the company's Web site (http://www.westerndigital.com) to access a variety of financial and investor information.

This release contains forward-looking statements, including statements relating to the consumption and growth of desktop-class hard drives in multi-user NAS/Entry servers. These forward-looking statements are based on current expectations, and actual results may differ materially as a result of several factors, including: market demand for hard drives, pricing, competition, overall economic conditions and other factors discussed in Western Digital's recent SEC filings, including but not limited to our Form 10-Q for the third quarter of fiscal 2004. We undertake no obligation to update our forward-looking statements to reflect new information or events or for any other reason.


Western Digital, the Western Digital logo and WD Caviar are registered trademarks of Western Digital Technologies, Inc. WD, WD Raptor and WD FIT Lab are trademarks of Western Digital Technologies, Inc. All other trademarks herein are property of their respective owner.

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