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SDK Starts Shipments of 3.5-Inch, 334 GB HD Media

Showa Denko K.K.
June 25, 2007

Showa Denko K.K. (SDK) has started this month commercial shipments of 3.5-inch hard disk (HD) media with storage capacity of 334 gigabytes per disk, using the innovative perpendicular magnetic recording (PMR) technology. To the best of our knowledge, this represents the world’s highest storage capacity for aluminum-based HD media of this size available on the market today.

In June 2005, SDK became the world’s first company to use the PMR technology for commercial production of HD media. Furthermore, in April this year, SDK began commercial production of 2.5-inch HD media with storage capacity of 160 gigabytes per disk. In our estimate, this product has the world’s highest storage capacity for the size at this moment.

Demand for high-capacity HD media is growing year by year in line with increases in shipments of HDD recorders that can record digital terrestrial broadcasting TV programs, and PCs that can store and edit moving pictures. SDK started up its new HD media plant in Singapore in December last year, ensuring speedy deliveries of large volumes of HD media based on the PMR technology.

Under the Passion Project, a three-year consolidated business plan that runs from 2006 through 2008, SDK is allocating a substantial amount of resources and promoting R&D for the HD media business as the company’s largest “growth-driver business.” SDK will continue to satisfy customer needs as the world’s largest independent HD media supplier.

For further information, contact:
IR & PR Office (Phone: 81-3-5470-3235)


Compared with the conventional technology that stores magnetic data on a horizontal plane of the HD media, the latest PMR technology enables vertical magnetic recording, resulting in a dramatic increase in recording density.