I'm running an 8TB one of these in my mediaserver, to serve up video to devices around the house and it can easily hit transfer rates of 200mb/s across SATAIII... Which is handy when streaming to more than once device at a time.
WD's Purple reign continues: 12TB helium disks for vid spy tech
Video surveillance is an insatiable monster, constantly needing more digital storage – and Western Digital is now feeding it 12TB drives. WD's Purple hard disk family this week had a 20 per cent jump in capacity, from 10TB to 12TB, courtesy of incrementing the platter count by one to eight, and an increase in per-platter …
COMMENTS
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Monday 25th June 2018 21:36 GMT Alan Brown
Re: Is my math dodgy?
"Your drive might last 171 years, or 200, or 300, but spare a thought for those that last 3 months or 6 months"
I wonder how they square that kind of claimed MTBF with an actual failure rate exceeding 100% over 5 years (some drives were replaced twice or more) for a fleet of a few thousand units.
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Thursday 21st June 2018 13:33 GMT Tomislav
Re: Helium
Unfortunately using vacuum is not an alternative because that would require a much stronger (read: thicker) casing, which in turn would reduce the available space for platters. Remember, you are limited by the 3.5" HDD case size. Filling the interior with helium helps keep the pressure difference to a minimum.
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Thursday 21st June 2018 15:43 GMT Anonymous Coward
Re: Helium
No it wouldn't.
The drive heads still 'fly' on a cushion of air/gas. In a vacuum the heads would drag along the surface of the drive.
Helium allows the head to fly closer to the disk, and as magnetism works this allows a much stronger field to record to the disk and/or using less power, it also mean the heads can be flung around much faster and/or with less power inpout to move them.
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Friday 22nd June 2018 10:25 GMT Alan Brown
" 54 billion cubic feet ... of helium under Tanzania "
Which immediately leaked away through the hole drilled to find it.....
More seriously: There's helium in every natural gas field but it generally costs more to recover it than you get from selling it so drillers normally just vent it. The US broke the economics of helium a few years back by dumping their strategic reserve on the open market and crashing the price.
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