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Hitachi's New Hard Drive Paves the Way for 4TB and 5TB HDDs
Posted on Dec 17 2010 04:59 AM by xper in Hardware

Hitachi Global Storage Technologies (Hitachi GST) on Thursday announced a series of new single-platter 2.5" hard disk drives (HDD) that are based on the sixth-generation perpendicular magnetic recording (PMR) platters. The latter feature higher areal density than currently available drives and can thus enable 3.5" hard drives with 4TB or even 5TB capacities.

Hitachi Travelstar Z5K500 hard disk drive comes in 2.5" form-factor and is just 7mm thick. The most important thing about this drive is that it is based on one 500GB sixth-generation PMR platter with 636Gb/inch2 areal density. The platters themselves will eventually enable 2.5" drives with 1TB or 1.5TB capacities with two or three platters inside.

Moreover, 3.5" platters with 636Gb/inch2 areal density will have capacity of around 1TB, which means that it will be possible to create 4TB hard drives with four platters or even 5TB HDDs with five platters in the next twelve month, which is in line with expectations by analysts.

The Travelstar Z5K family of hard drives offers 500GB, 320GB, 250GB capacities, 5400rpm spindle speed, 8MB cache buffer, Serial ATA-300 interface. The manufacturer declares 5.5ms average latency, 13ms average read seek time, 1.8W maximum power consumption during seek and 0.55W minimum power consumption in idle mode.

“As the industry’s only 500GB one disk product and the only second generation 7mm product family, Hitachi continues to push the bar higher, and is leading the shift from 9.5mm 2.5" drives to 7mm 2.5" drives across a broad range of market segments," said Brendan Collins, vice president of product marketing at Hitachi GST.

Full article: xbitlabs

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