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Author Topic: DNS-321 - WD 2TB Drive Compatibility (WD20EARS)  (Read 22663 times)

aasoror

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  • Posts: 19
Re: DNS-321 - WD 2TB Drive Compatibility (WD20EARS)
« Reply #15 on: May 22, 2010, 11:11:44 PM »

I have two green WD 2Tb drives setup in Raid0 - not been a problem for me.

There wont be a problem in any RAID setup, until one of them goes into "deep recovery" (for whatever reason), the synchronization procedure needed will take several hours (and that's for every single time one of the drives goes into "deep recovery").

Its very risky for those using RAID0, because if a RAID0 drive fails there is no synchronization done and data is lost for good (because its stripped), that said, the drive didn't actually fail, whether the RAID controller will realize that fact after the drive is back from deep recovery (and the NAS is restarted) is something I am not sure any of us is willing to test. :)

Reports here indicate that the NAS is unable to re-detect the drive as a part of the NAS array, but rather consider it a new addition to the array (once the NAS is restarted), this is not problem in RAID1, because the drive can be synchronized (from the other drive), but in RAID0 the drive can't be synchronized.

Unless of course, your aren't using WD desktop drives but the WD Enterprise ones (which doesn't have deep recovery feature).
« Last Edit: May 22, 2010, 11:20:01 PM by aasoror »
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The_Tango

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  • Posts: 16
Re: DNS-321 - WD 2TB Drive Compatibility (WD20EARS)
« Reply #16 on: May 23, 2010, 06:35:47 AM »

Western Digital Caviar Green WD20EADS 2TB 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive.

Sorry does not apply.
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zhyla

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  • Posts: 11
Re: DNS-321 - WD 2TB Drive Compatibility (WD20EARS)
« Reply #17 on: May 24, 2010, 09:17:15 AM »

My understanding is the WD20EADS, along with all other current WD desktop drives, has the deep recovery feature.
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aasoror

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  • Posts: 19
Re: DNS-321 - WD 2TB Drive Compatibility (WD20EARS)
« Reply #18 on: May 25, 2010, 03:25:19 AM »

My understanding is the WD20EADS, along with all other current WD desktop drives, has the deep recovery feature.

True
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