Toshiba's New 1.8-Inch HDD Achieves 100GB, World's Largest(1) Storage Capacity

Toshiba Corporation, the industry leader in bringing high storage
capacities to small form factor hard disk drives, today announced a
1.8-inch drive that offers a storage capacity of 100 gigabytes, the
largest(1) capacity yet achieved in this class of HDD. The new drive,
MK1011GAH, employs perpendicular magnetic recording (PMR) technology
and an improved error correction code to secure the highest(2) areal
density of any 1.8-inch HDD in the market, 240.8 megabits per square
millimeter (155.3 gigabits per square inch). Toshiba will start mass
production of this new best-in-class drive from January 2007.

Packing larger data capacities into small form factor HDD is a
must to support continued advances in the notebook PC market and to
meet growing demand for personal digital media supporting high
capacity audio and video applications. Toshiba's new 1.8-inch drive
builds on the Company's leadership in this key product segment as the
first HDD in its class to achieve a 100GB capacity. This latest
Toshiba advance meets needs for enhanced, lightweight storage
capacities and will support the development of future generations of
smaller, lighter, more powerful mobile PC. In the personal digital
media market, the new drive's unrivaled capacity will support storage
of multiple data sources, including home video and movies, and will
bring users improved functionality.

Alongside capacity improvement, Toshiba has also improved power
consumption(3) to 0.003W/GB, as defined in the Ministry of Economy,
Trade and Industry's Energy Conservation Law, assuring a more
environmentally friendly design. The new drive also complies with the
EU's RoHS directive, which came into force in July 2006.

Toshiba will feature the new drive at the International Consumer
Electronics Show (CES) 2007, in Las Vegas, Nevada from January 8 to
11, at booth 12832.

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Outline of New Product
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Part No. Capacity Dimension
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MK1011GAH 100GB 54.0 x 71.0 x 8.0 mm
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Background

Hard disk drives are now used in applications including mobile PCs
to digital audio players. The market has a voracious appetite for
larger data capacities, as more powerful networks and applications
bring audio-visual capabilities to more products, particularly AV
notebook PCs. By introducing a of 100GB 1.8-inch HDD, the world's
largest(1) capacity, Toshiba will sustain the industry's ability to
meet customer needs in terms of storing multiple high capacity data
files and achieving playback of data-rich movies. Toshiba expects the
new drive to achieve sustained sales increases in the market.

PMR technology and improved error correction increase capacity.

PMR technology was adopted for the new drive, as it is superior in
areal density recording and recording stability. The addition of an
improved error correction code has made it possible to retrieve highly
accurate data at high areal densities, further contributing to
increased capacity.

(1) The industry's largest commercially available capacity in a
1.8-inch hard disk drive, as of Dec.5, 2006 (source: Toshiba)

(2) The world's highest commercially available areal density in a
1.8 inch hard disk drive, as of Dec.5, 2006 (source: Toshiba)

(3) Excludes power consumption from recording capacity, both of
which are defined by the Energy Conservation Law.

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Main Specifications
Model name MK1011GAH
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Formatted capacity 100GB
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Number of platters 2
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Number of heads 4
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Average seek time 15m sec
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Data transfer rate 100MB/sec
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Rotational speed 4,200rpm
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Interface ATA-7 (LIF connector)
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External Dimensions (WxDxH; mm) 54.0 x 71.0 x 8.0
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Weight 59g (max.)
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Energy consumption efficiency(3) 0.003 W/GB
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Note: Hard disk capacity is calculated on the basis of
1MB=1-million bytes, and 1GB=1-billion bytes.