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New Toshiba hard drive uses perpendicular technology

Posted: 21 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:toshiba? hard disk drive? mk8007gah?

Toshiba Corp. has developed a 1.8-inch hard disk drive that achieves a 40GB capacity by employing perpendicular recording technology for the first time.

The drive provides a 133Gb recording density per square inch, which is 37 percent higher than a 30GB drive based on longitudinal recording, according to a Toshiba spokeswoman. Perpendicular recording could pave the way for higher capacity drives and overcome the density limits of longitudinal recording, the spokeswoman added.

Toshiba plans to mass produce the 40GB, single-platter drive (designated MK4007GAL) beginning in the second quarter of 2005. In the third quarter, Toshiba will follow with an 80-Gbyte, dual-platter drive designated the MK8007GAH.

Earlier this year, Alps Electric Co. Ltd, a major HDD head supplier, developed a giant magnetoresistive (GMR) thin-film HDD head for perpendicular recording that achieves densities of 120Gb per square inch. Toshiba will not use Alps' heads but instead will use a component supplier the company declined to name.

Toshiba eventually plans to incorporate the perpendicular recording technology in a 0.85-inch hard disk for camera phones. The move promises to increase storage capacity while being less expensive than solid state memory. Though Toshiba will initially produce the 0.85-inch drive with a 2GB capacity using a longitudinal recording technology, the company said it expects use of perpendicular recording will result in multiple platter drives with a 6GB to 8GB capacity.

- Yoshiko Hara

EE Times

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