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WD Caviar Green 1.5 TB SATA Drives  

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douglasbrush
(@douglasbrush)
Senior Member

Does anyone have experience with these in large numbers? I am looking at about 50 of them for a collection in the near future. Single drive source for dual Solo/Hard Copy/TD1 collection - assembly line bag and tagging.

Curious if anyone has had a particular failure rate outside of "normal" with these?

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Posted : 14/12/2009 8:00 pm
nathan.vorhees
(@nathan-vorhees)
New Member

I had 5 of the 1TB WD greens and had issues with the drives going offline at random while running long copies or while creating images. I ended up having to disable the power saving features. It's either a jumper or a software utility, cant remember at the moment.

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Posted : 15/12/2009 11:58 pm
athulin
(@athulin)
Community Legend

Does anyone have experience with these in large numbers? I am looking at about 50 of them for a collection in the near future. Single drive source for dual Solo/Hard Copy/TD1 collection - assembly line bag and tagging.

Curious if anyone has had a particular failure rate outside of "normal" with these?

No experience, just a caveat. Are you using XP?

WD Caviar Green (in some sizes, don't know which) came up recently in conjunction with WD Advanced Format, which is a move from 512-byte sectors to 4096-byte sectors, which apparently will give a ~10% boost in storage capacity. There's some kind of 512-byte emulation mode that maps old-style sectors to new-style, but I still wonder if that has any impact on acquiry and examination.

It's pretty clear that you want clusters to be aligned to the new-sized sectors, and also sized to fit them, or there will be a pretty heavy cost to carry out the emulation, when clusters straddle sectors. XP apparently doesn't support these drives, so there need to be some kind of pre-processing to get things right, and there's a cost involved if you decide to change partitioning. Vista and Win7 are said to already support things (as far as I can make out, it's an ATA8-ACS feature that needs to be supported in the disk drivers.)

This page is useful reading on AFT www dot pcper dot com/comments.php?nid=8113

I don't think the risk is large in your case, but it seems that this move towards larger physical sectors may be something that needs to be managed during acquiry and perhaps also later. And WD identifies Caviar Green as the product line where their AFT have begun to appear.

(Added later the WD Caviar Green drives that use AFT are those with EARS at the end of their model number. Be careful creating partitions or formatting volumes under XP and older with these – it may cause clusters to straddle the physical sectors, and so reads and writes will require overhead to emulate.)

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Posted : 16/12/2009 12:33 pm
mscotgrove
(@mscotgrove)
Senior Member

I've had 4 1TB Green WD disks in a RAID 5 (on Vista) since April. No problems. They remain nice and cool.

On the other hand I have seen a few 'dead' ones sent to me for data recovery.

No drive is perfect, but I feel a cool one is a good start.

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Posted : 16/12/2009 2:35 pm
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