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Press Release
WD® Expands Line of SAS Hard Drives for Enterprise Applications

WD's New SAS Hard Drives Bolster Enterprise Product Portfolio for Mission Critical Server and Storage Systems

IRVINE, Calif. - Jan. 18, 2011 - Western Digital® (NYSE: WDC), a leader in the desktop, mobile, high-capacity enterprise and consumer markets for hard drives, today announced the availability of its second-generation WD S25 SAS drives (photo) and its latest WD RE SAS 3.5-inch drives for the traditional enterprise market. Shipping now, the 2.5-inch, 10,000 RPM, WD S25 with SAS 6 Gb/s interface hard drives offer IT professionals ultra-reliable and efficient, high-performance storage with new 450 GB and 600 GB capacities. The WD S25 line, including the previously released 147 GB and 300 GB capacities, is designed for mission-critical server and storage systems.

Also shipping now to OEMs, the new 3.5-inch, 7,200 RPM, WD RE SAS with 6 Gb/s interface hard drives offer 1 TB and 2 TB capacity points, and represent a key addition to WD's expanding enterprise product portfolio. The WD RE SAS drives mark an important commitment to the expansion of WD's SAS portfolio for high-capacity data center storage, storage area networks (SAN), network attached storage (NAS), direct attach storage (DAS), networked surveillance systems and cloud storage.

"Meeting the demands of our customers and IT professionals in the enterprise market is the primary driver of our long-term commitment to SAS drives," said Darwin Kauffman, WD's vice president of enterprise storage solutions. "Our focused strategy in the enterprise continues to ensure that customers who have rewarded WD with their preference of WD drives in other application segments receive the same outstanding values of quality, reliability, performance and availability with WD's SAS drives. It is with that commitment that we are now able to meet a wider set of customer requirements."

"Over the past three years, SAS has established itself as the preferred interface for HDDs in servers and enterprise storage systems, representing more than 50 percent of all HDDs shipped for enterprise applications in 2010," said John Rydning, research director, hard disk drives at IDC. "The performance, scalability, and reliability of SAS will result in more than two-thirds of HDDs shipping with a SAS interface for enterprise applications by 2014."

WD's latest product offering provides a full spectrum of SAS drives to fit specific enterprise needs. The WD S25 family of drives delivers high performance with its 6 Gb/s SAS interface and is fit for use in a broad range of mission-critical applications including dense server and storage systems. WD RE SAS hard drives are engineered to offer data-hungry SAS-based storage systems the massive capacity they need without compromising top-of-the-line performance. This uncompromising combination of high-capacity, peak performance and best-in-class reliability make WD RE SAS drives ideal for business critical applications. More information about WD S25 SAS hard drives may be found on the company's Website at http://www.wdc.com/en/products/products.aspx?id=10 and information about WD RE SAS hard drives can be found at http://www.wdc.com/en/products/products.aspx?id=580.

About WD WD, 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 accessible and secure from loss. WD applies its storage expertise to consumer products for external, portable and shared storage applications.

WD was founded in 1970. The company's storage products are marketed to leading systems manufacturers, selected resellers and retailers under the Western Digital® and WD brand names. Visit the Investor section of the company's Website (www.westerndigital.com) to access a variety of financial and investor information.

This press release contains forward-looking statements, including statements relating to expected number of HDDs shipping with a SAS interface for enterprise applications by 2014. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements, including changes in product life cycles, technology and competing storage technologies, and other risks and uncertainties listed in WD's recent SEC filings. WD does not intend, and undertakes no obligation, to publish revised forward-looking statements to reflect events or circumstances after the date of this release or to reflect the occurrence of unanticipated events or for any other reason.

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Western Digital, WD, and the WD logo are registered trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. All other brand and product names mentioned herein are the property of their respective companies. One gigabyte (GB) = 1 billion bytes. One terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second.