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SDK Starts Shipments of 2.5-Inch 670 GB HD Media

Showa Denko K.K.
 November 20, 2013

Showa Denko (SDK) (TOKYO:4004) has started this month commercial shipments of 2.5-inch hard disk (HD) media with storage capacity of 670 gigabytes per disk, using the seventh-generation perpendicular magnetic recording (PMR) technology.  

To the best of our knowledge, our new 2.5-inch HD media have the world’s highest storage capacity for this size available on the market today.  While SDK is now mainly supplying 2.5-, and 3.5-inch sixth-generation PMR media, the company will take the lead in commercializing higher-capacity media with the launch of the seventh-generation 2.5-inch media.

As the world’s largest independent HD media supplier, SDK will aim to ensure stable supply of high-capacity media.  The company will also continue to develop world-leading technologies and meet customer requirements in terms of quality as well as quantity.

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

2.SDK’s HD media based on the PMR technology are classified as shown in the table below according to respective storage capacities.

(Unit: gigabytes per disk; as of  November 20, 2013)
Generation 2.5-inch 3.5-inch
1 80 160
2 120 250
3 160 334
4 250 500
5 334 750
6 500 1000
7 670

For more information, contact:
PR Office (Phone: 81-3-5470-3235)