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Alternatives to WD RE4 drives? - Page 2

post #11 of 15
Quote:
Originally Posted by parityboy View Post
Ahhh, but do you tell them you're running them in RAID, when you have to RMA them?
If you have ever had to RMA a WD drive... here is the process.

1. Go to website
2. Enter Serial Number and WD Diag Error Code/Issue
3. Ship drive in

I have never actually had them "ASK" me anything, nor request any info about how the drive was being used.
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post #12 of 15
Quote:
Originally Posted by Kramy View Post
Apparently RAID-1 and RAID-0 are unaffected by TLER. Not sure how true that is, but that's what I heard somewhere.
As far as I'm aware, TLER is dangerous in RAID 0, since there are NO redundant copies of the data on the array; you need the drive to keep trying to recover the data, else what you get from the array will be corrupted.

For RAID 1, you'd still need TLER, else the process reading from the bad drive will sit waiting for the drive to recover, and the controller will fail the drive. RAID 1 is a redundant topology, so you still need to tell the RAID controller to recover the missing data from another array member.

Quote:
Originally Posted by slavearm View Post
If you have ever had to RMA a WD drive... here is the process.

1. Go to website
2. Enter Serial Number and WD Diag Error Code/Issue
3. In the notes, tell them you need an identical replacement
4. Ship drive in
Fixed. If you miss this step, there's every chance they will "upgrade" your drive - quite useless for a RAID array.
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post #13 of 15
I have never had to execute that step, but YMMV.
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post #14 of 15
Quote:
Originally Posted by Kramy View Post
Apparently RAID-1 and RAID-0 are unaffected by TLER. Not sure how true that is, but that's what I heard somewhere.
I ran my old 640Gb Cavier Blacks in RAID 0 and i got constant freezing with one of the drives eventually being dropped from the RAID.

Using the WDTLER tool fixed the problem for me (Turning TLER on), but that tool is now obsolete and does not work on drives manufactured after October 2009.

I've written a guide here for anyone with older drives who wants to enable TLER.
Edited by jackbrennan2008 - 7/28/11 at 10:56am
post #15 of 15
Quote:
Originally Posted by jackbrennan2008 View Post
I ran my old 640Gb Cavier Blacks in RAID 0 and i got constant freezing with one of the drives eventually being dropped from the RAID.
Good to know. I wonder if new drives are affected? I know TLER can't be configured on new WD Blacks, so I hope not.

There's a few people here that are running WD Black RAID-0 arrays without issue.
     
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Hitachi 2TB - HDS723020BLA64 Crucial M500 960GB - CT960M500SSD1 WD 4TB Black - WD4001FAEX WD 4TB Black - WD4001FAEX 
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