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Hitachi 450GB perpendicular drive tips up
HITACHI GST announced this week the Ultrastar 15K450, its latest perpendicular magnetic recording (PMR) technology based 450GB enterprise HDD.
The drive shipping this quarter will be the highest capacity 15,000 RPM HDD on the market or so Hitachi says, despite Seagate shipping and not just announcing the same spec’d drive on March 4th
The Ultrastar 15K450 shipping this quarter arrives in two versions, 3Gb/s Serial Attached SCSI (SAS) or 4Gb/s Fibre Channel (FC) interface (just like Seagate).
The drive claims average seek times as low as 3.3 milliseconds and fast rotational speeds reducing average latency time down to two milliseconds.
Hitachi said it shows a 30 per cent improvement in sequential throughput over its unmentioned predecessor. Seagate, on the other hand, quoted just a meagre 28 per cent improvement over its previous best.
They should hang their hard drive heads in shame, shurely. µ
L'Inqs
Hitachi
Ultrastar 15K450
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Hitachi may be slightly slower at max but may have better average STR (160 vs 171 or is that 163MB/s for seagate).
Hitachi uses slightly higher Gbit/sq.in. probably uses slightly smaller platter (more tracks per inch not more KB/track).
Seagate don't quote different seek times for different platters (3.4/3.9ms for R/W). Hitachi doc claims 3.6ms not 3.3ms. Similar power at peak. Seagate slightly better at idle. Hitachi only offeres full 450GB with new family, Seagate has 300GB and 146GB model using new design.