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HGST 6TB Ultrastar He6 HDD Now Shipping Discussion

HDD Helium HGST

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#1 Brian

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Posted 04 November 2013 - 10:30 AM

HGST has started shipping their new 6TB helium hard drives. 

 

HGST 6TB Ultrastar He6 HDD Now Shipping
 

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#2 Mkruer

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Posted 04 November 2013 - 11:17 AM

How do they get 6TB, if the known platter size have been 800GB or 1000GB. If they are using 7 platters. Would not the the drive be eihter 5.6TB or 7TB?


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#3 unityole

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Posted 04 November 2013 - 11:40 AM

its ashame we probably won't be able to purchase these and even if we do they would be extremely expensive :(  damn enterprise and server lol

 

these sata or sas?


#4 GTVic

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Posted 04 November 2013 - 01:01 PM

How do they get 6TB, if the known platter size have been 800GB or 1000GB. If they are using 7 platters. Would not the the drive be eihter 5.6TB or 7TB?

6.5 platters


#5 Brian

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Posted 04 November 2013 - 02:47 PM

Just got this feedback and added it to the story - 

 

The drives will be available in SAS and SATA interfaces and only in 6TB capacity. HGST is not disclosing platter configuration at this time.


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#6 fallbreak

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Posted 04 November 2013 - 07:14 PM

6.5 platters

Yep.


#7 continuum

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Posted 05 November 2013 - 01:13 AM

IIRC they were also saying these are only going to a few select large customers initially. Could be a while til smaller guys and retail see anything.

 

They also could be using some in-between platter size...


#8 Mkruer

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Posted 05 November 2013 - 01:55 AM

My guess is that for this release they are using 6x1000GB platters not 7, though have the capacity to fit 7. That would seem to make more sense to me then some unused platter size. But enough with the technical mumbo jumbo.

 

I wonder what data recovery would be like for this type of drive. We all know at some point someone will do something stupid and then someone will have the crack the case of the drive. I am just wondering if the drive can still function open air at reduced rpms (3500RPM?) I doubt HDD recovery firms will spend and serious case on a helium filled environment make fixes to that type drive. 


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#9 jtsn

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Posted 05 November 2013 - 02:27 AM

If wonder what happens, if all that nice Helium has diffused out of the drive after some years of operation.


#10 Brian

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Posted 05 November 2013 - 08:08 AM

The drive would certainly fail if that happens. They're pretty confident the casing will not leak.

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#11 Mickey

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Posted 05 November 2013 - 11:45 PM

My guess is it's an in-between disk capacity rather than 1TB. It's not that hard to make the tracks slightly wider and spread 6TB across 7 disks. It lets you use heads that can't meet 1TB/disk track widths.

 

As for the drive functioning w/o He, the heads will likely crash in short order. The fly height is dynamically tuned for a specific pressure and environment. If it's tuned for pure He, the fly height will be way off if run in air (and vice versa). I'm sure data recovery firms will figure out how to get the data off, possibly placing the drive in a small He booth, for example. It just won't be cheap.


#12 FastMHz

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Posted 06 November 2013 - 12:57 PM

The secret of course is having enough redundancy that you'd never be in a situation to need a recovery company :-)

 

Also, I wonder how much huge complicated 3.5 drives like this are needed.  With Samsung's 2TB, 9.5mm now shipping, you could get 6TB with 3 of them in the same space...


Edited by FastMHz, 06 November 2013 - 01:00 PM.

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#13 Mickey

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Posted 07 November 2013 - 11:46 PM

It will likely come down to cost. Will 1 large 3.5" HDD cost less (power, cooling, etc.) to run than 3 smaller 2.5" HDDs or vice versa? I don't know which option would win from a performance standpoint, either.


#14 unityole

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Posted 08 November 2013 - 03:52 AM

It will likely come down to cost. Will 1 large 3.5" HDD cost less (power, cooling, etc.) to run than 3 smaller 2.5" HDDs or vice versa? I don't know which option would win from a performance standpoint, either.

 

6TB? if its less than $350 im in for a few


#15 [ETA]MrSpadge

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Posted 09 November 2013 - 09:43 AM

Performance-wise 3 2.5" win against 1 3.5" from the same generation and comparable technology (not comparing 4.2k rpm 2.5" against 15k 3.5"), unless your RAID setup is really bad. Power and hence cooling are probably pretty similar for these 2 options. Cost would usually favor the 3.5" drive, but that He filling might change things.

 

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#16 unityole

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Posted 01 December 2013 - 02:17 AM

not sure when we will be available to purchase these drives


#17 fallbreak

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Posted 01 December 2013 - 12:51 PM

not sure when we will be available to purchase these drives

 

Probably never for normal consumers. these will go exclusively to cloud companies right now - which is totally fine with me - btw.

There are a few issues with the basic design still, for example atmospheric pressure differentials. "Do not ship Helium Drives via Air"






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