WD Ships Industry's Highest Capacity Mobile Hard Drive for Notebooks and Portable Storage Devices

New 250 GB WD Scorpio(TM) Drives Are WD's Second Generation Employing

Perpendicular Magnetic Recording Technology

May 21, 2007, 01:00 ET from Western Digital Corp.

    LAKE FOREST, Calif., May 21 /PRNewswire-FirstCall/ -- Western Digital
 Corp. (NYSE:   WDC) today announced it is now shipping its 250 GB WD
 Scorpio(TM) 2.5-inch Serial ATA (SATA) hard drives. The drives employ
 perpendicular magnetic recording (PMR) technology to achieve the highest
 capacity available in a small form factor drive and have WD proprietary
 features that make the drive quiet, use less power and run at cool
 operating temperatures.
     "The 2.5-inch market continues to be a major focus for WD, and this 250
 GB WD Scorpio drive represents our second-generation PMR platform," said
 Jim Morris, WD's vice president and general manager of notebook storage.
 "The WD Scorpio 250 GB hard drive is a direct result of the significant
 investments WD has made in proprietary head technologies as well as
 significant system level feature innovation. With the introduction of our
 latest-generation WD Scorpio drives, WD continues to offer mobile computing
 and portable storage customers the same outstanding quality, reliability
 and performance that have earned the company a leadership position in the
 desktop PC market."
     According to market research firm, IDC, adoption of PMR technology in
 mobile 2.5-inch hard drives will sustain an increase in the average
 capacity shipped close to the average growth rate of 32 percent for the
 past five years. The firm states that by 2011, shipments of mobile 2.5-inch
 hard drives will more than double 2006 shipment volumes.*
     Demand for 2.5-inch hard drives continues to increase at a rapid pace,
 driven by notebook computers, portable storage devices and consumer
 electronics products. Users of these applications need high capacity drives
 to manage storage-hungry content. WD Scorpio drives deliver the performance
 and features to meet demands that are specific to notebook PCs and portable
 storage devices, such as WD Passport(R) portable drives: quiet operation,
 high shock tolerance and low power consumption.
     The new WD Scorpio drive further expands the company's breadth of
 2.5-inch mobile hard drive offerings to capacity points ranging from 40 GB
 up to 250 GB.
     WD Scorpio Exclusive Features
     WD's exclusive WhisperDrive(TM) technology combines state-of-the-art
 seeking algorithms to yield it one of the quietest 5400 RPM, 2.5-inch
 drives available. Leading-edge ShockGuard(TM) technology combines firmware
 and hardware advancements to protect the drive mechanics and platter
 surface to meet the highest combined shock tolerance specifications
 required for mobile and notebook applications.
     Another unique WD Scorpio 250 GB feature is its IntelliSeek(TM)
 technology, which proactively calculates an optimum seek speed to eliminate
 hasty movement of the actuator that produces noise and requires power,
 which is common in other drives. With IntelliSeek, the actuator's movement
 is controlled so the head reaches the next target sector just in time to
 read the next piece of information, rather than rapidly accelerating and
 waiting for the drive rotation to catch up. This smooth motion reduces
 power usage by more than 60 percent compared with standard drives, as well
 as quiets seek operation and lowers vibration.
     For a demonstration on IntelliSeek, visit the WD Web site at
     About PMR
     With PMR technology, the magnetization of each data bit is aligned
 vertically to the spinning disk, rather than longitudinally as has been the
 case in hard drive technology for decades. This enables more data on a
 given disk than is possible with conventional longitudinal recording, and
 provides a platform for future expansion of hard drive densities.
     Pricing and Availability
     WD Scorpio 250 GB drives (model WD2500BEVS) are available on the
 company's online store (www.westerndigital.com). Estimated pricing is
 $199.99 USD. More information about WD Scorpio mobile drives may be found
 on the company's Web site at
     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 close-at-hand and secure
 from loss. WD applies its storage expertise to consumer products for
 external, portable and shared storage products.
     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, including
 statements relating to: expected increases in the volume of mobile 2.5-inch
 hard drives shipped and average capacity shipped; and expected increase in
 demand for mobile 2.5-inch hard drives. These forward-looking statements
 are based on current management expectations, and actual results may differ
 materially as a result of several factors, including: supply and demand
 conditions in the hard drive industry and business conditions generally;
 and other risks and uncertainties listed in WD's recent SEC filings,
 including its form 10-Q for the third fiscal quarter of 2007. WD undertakes
 no obligation to update these forward-looking statements to reflect new
 information or events or for any other reason.
     Western Digital, WD, the WD logo and WD Passport are registered
 trademarks and WD Scorpio, ShockGuard and WhisperDrive are trademarks of
 Western Digital Technologies, Inc. All other trademarks herein are property
 of their respective owner.
     * Source: IDC Doc. 206701, "Worldwide Hard Disk Drive 2007-2011
 Forecast and Analysis: Creating Space for an Expanding Digital Universe",
 May 2007.
     (Logo: http://www.newscom.com/cgi-bin/prnh/20000711/WDCLOGO )

SOURCE Western Digital Corp.