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Toshiba ships first perpendicular harddrive

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Hardware

Toshiba claims it has won the race of bringing the first PMR harddrive to the market. PMR, short for perpendicular magnetic recording, is believed to increase the capacity of harddrives substantially: Toshiba's first PMR device is a single platter 1.8-inch model with a storage density of 133 Gbit per square inch.

Perpendicular recording has turned out to be key to increase capacities of harddrives for a few more years before the storage industry will have to think more seriously about switching from the current, 32-year old, "Winchester" tech to optically-assisted approaches. In fact, perpendicular recording is believed to drive available storage space deep into a territory that was believed unreachable with Winchester just five years ago.

In this respect, it is exciting that perpendicular recording moves quickly from being theory into reality. The plain specs and usability, however, are not earth-shattering, at least for this specific debut model. While squeezing 40 GByte on a single platter, overall storage density remains at a level of some existing harddrives that do not use perpendicular recording - 133 Gbit per square inch.

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