WD® Shipping World's First 5 mm 2.5-Inch Hard Drive

             WD® Shipping World's First 5 mm 2.5-Inch Hard Drive

First in a Family of High-performance and Slim Drives for Ultra-portable
Devices Feature Innovative Mechanical Designs and Solid State Hybrid Drive

PR Newswire

IRVINE, Calif., April 23, 2013

IRVINE, Calif., April 23, 2013 /PRNewswire/ --WD^®, a Western Digital
(NASDAQ: WDC) company and world leader in storage and connected-life products,
today announced it is shipping the world's first ultra-slim 2.5-inch, 5 mm
hard drives and solid state hybrid drives (SSHD), which are designed for
integration into the slimmest devices and space-constrained computing
environments. With 500 GB of storage capacity and models with high
performance-enabling solid state hybrid drive technology, this slim product
line helps to address the tradeoffs system designers often make between
capacity, physical size and performance.

"With the launch of our new WD Blue™ 5 mm ultra slim hard drives and our WD
Black™ SSHD products, currently shipping to OEMs, WD is delivering to our
customers a variety of solutions that maximize storage capacity and volumetric
efficiency, as well as performance and system responsiveness, for consumers,"
said Matt Rutledge, vice president of WD's client computing business unit.
"Our engineering team took a clean-sheet approach with 5 mm to deliver an
ultra-thin hard drive that enables a world of possibilities and applications
for mobile computing and beyond."

WD designed the new WD Blue and WD Black 5 mm drives to enable new levels of
device portability. The new drives are aimed to increase internal storage
capacity while enabling it to fit into smaller device slots. In addition, the
slimmer and more portable the device, the more vulnerable the hard drive is to
user-induced stress. To battle this, WD has designed key enablers to the 5 mm
form factor:

Ultra-slim Form Factor – 5 mm height with compact connector offers system
designers a greater degree of chassis design freedom. This ultra-slim form
factor reduces weight by up to 36 percent compared with a standard 9.5 mm

Best-in-class Acoustics and Shock – WD's best-in-class acoustics use
technologies that reduce noise when the drive is active or idle. The WD Blue
and WD Black 5 mm drives deliver unprecedented operation and non-operation
shock specifications with 400 G and 1000G, respectively.

Edge Card Technology – WD designed the connector and board utilizing cell
phone miniaturization technology to maximize the mechanical sway space in the
hard drive and ensure shock performance.

Edge Card Connector – WD Blue 5 mm hard drives also feature the first
application of a new small form factor SFF-8784 edge connector. This new
connector receives power from and interfaces with the host I/O bus via the
SATA interface connector SFF-8784.

StableTrac™ – The motor shaft is secured at both ends to reduce system-induced
vibration and stabilize platters for accurate tracking during read and write
operations which enables consistently higher performance.

Dual Stage Actuator – Leading-edge enterprise dual stage actuators provide two
actuators that improve positional accuracy over the data track(s). The primary
actuator provides coarse displacement using conventional electromagnetic
actuator principles. The secondary actuator uses piezoelectric motion to fine
tune the head positioning to a higher degree of accuracy.

Price and Availability

Shipping today to select industrial distributors and OEM customers in 500 GB
capacities, WD Blue 2.5-inch 5 mm hard drives, (model: WD5000MPCK) has a
Manufacturer's Suggested Retail Price (MSRP) of $89.00 USD. WD Blue 2.5-inch 5
mm hard drives are covered by a two-year limited warranty. WD Black SSHD
versions are currently shipping to OEM's and integrators with both WD
proprietary hybrid technology and industry standard SATA I/O technology. More
information on WD Blue 2.5-inch 5 mm hard drives may be found on the company's
website at http://www.wd.com/en/products/products.aspx?id=800#tab11.

About WD

WD, a Western Digital company, is a long-time innovator and storage industry
leader. As a storage technology pacesetter, the company produces reliable,
high-performance hard disk drives and solid state drives. These drives are
deployed by OEMs and integrators in desktop and mobile computers, enterprise
computing systems, embedded systems and consumer electronics applications, as
well as by the company in providing its own storage products. WD's leading
storage devices and systems, networking products, media players and software
solutions empower people around the world to easily save, store, protect,
shareand experience their content on multiple devices. WD was established in
1970 and is headquartered in Irvine, California. For more information, please
visit the company's website at www.wd.com.

Western Digital Corp. (NASDAQ: WDC), Irvine, Calif., is a global provider of
products and services that empower people to create, manage, experience and
preserve digital content. Its companies design and manufacture storage
devices, networking equipment and home entertainment products under the WD,
HGST and G-Technology brands. Visit the Investor section of the company's
website (www.westerndigital.com) to access a variety of financial and investor

Western Digital, WD, and the WD logo are registered trademarks in the U.S. and
other countries; WD Blue, WD Black, StableTrac and NoTouch are trademarks of
Western Digital Technologies, Inc. in the U.S. and other countries. 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. As used for storage capacity, one terabyte (TB) = one trillion
bytes. Total accessible capacity varies depending on operating environment. As
used for transfer rate or interface, gigabit per second (Gb/s) = one billion
bits per second.

(Photo: http://photos.prnewswire.com/prnh/20130423/LA99471)

(Logo: http://photos.prnewswire.com/prnh/20000711/WDCLOGO)


Website: http://www.wd.com
Contact: Heather Skinner, WD Public Relations, 949.672.7920,
heather.skinner@wdc.com; Bob Blair, Western Digital Investor Relations,
949.672.7834, robert.blair@wdc.com
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