Sydney, Australia - March 26 2008 - WD® announced today that it is now shipping in volume its WD Caviar® SE16 640 GB 3.5-inch hard drives based on 320 GB-per-platter technology -- a platform that it has been shipping since January 2008 and is serving as the foundation of all of the company's 3.5-inch drive families.

Ideal for data-intensive applications, high-performance computing and multimedia systems, the WD Caviar SE16 640 GB drives deliver high performance with their extreme areal density, 3 Gb/s transfer rate, and Native Command Queuing (NCQ). Its two-platter design promotes cool, quiet operation in a high-capacity drive.

"The 640 GB capacity point will be an important one for our desktop customers, and WD is leading high-volume shipments to the channel and OEM customers," said Don Bennett, general manager and vice president of WD's desktop business unit. "Two-platter hard drives have always been the perfect balance of value, capacity and performance for many of our customers. Today's common two-platter drives are limited to 500 GB, but we are expanding capacity by 28 percent on the same design with WD's leading technology heads and disks."

The 320 GB-per-platter technology is being deployed across WD's desktop, enterprise, consumer electronics and external hard drive product lines, including additional capacity points, throughout this calendar year.

The WD Caviar family of 3.5-inch desktop hard drives delivers high performance with 3 Gb/s transfer rate, Native Command Queuing (NCQ), and cool operating temperatures and quiet operation, enabling customers to integrate WD products in the most demanding desktop and external storage environments.

Product Summary
Manufacturer: Western Digital
Product: WD Caviar SE16 640 Gigabytes (WD6400AAKS)
Vendor Website: www.westerndigital.com
RRP: A$189 or NZ$209
Warranty: 3 Years
Australian Distributors: Achieva, Synnex Australia, Today Tech, Westan
New Zealand Distributors: VST, Ingram Micro NZ, Synnex NZ

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 Web site (www.westerndigital.com) to access a variety of financial and investor information.

This press release contains forward-looking statements concerning deployment of WD's 320 GB-per-platter technology across WD's desktop, enterprise, CE and external hard drive product lines, including additional capacity points, throughout this calendar year. These forward-looking statements are based on WD's current expectations and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements, including: uncertainties related to the development and introduction of products based on new technologies and successful expansion into new hard drive markets; supply and demand conditions in the hard drive industry; actions by competitors; and other risks and uncertainties listed in WD's recent Form 10-Q filed with the SEC on February 5, 2008, to which your attention is directed. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and WD undertakes no obligation to update these forward-looking statements to reflect subsequent events or circumstances.

### Western Digital, WD, the WD logo and Caviar are registered trademarks of Western Digital Technologies, Inc. One gigabyte (GB) = 1 billion bytes. One terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment.

PR CONTACT
Renato Catalan
Gap Marketing and Management Pty Ltd
www.gapmarketing.com.au