[mythtv-users] 2 TB Hard Drive Recommendations

Mark Knecht markknecht at gmail.com
Tue Dec 7 21:18:15 UTC 2010

On Tue, Dec 7, 2010 at 1:02 PM, John Drescher <drescherjm at gmail.com> wrote:
>> Note that Green drives are not recommended for raid arrays because of timing
>> out and goofing your raid array.  WD's "RE" (RAID Edition) HDDs support
>> Time-Limited Error Recovery ("TLER" ):
>> More info here:
>> http://www.tomshardware.com/forum/251076-32-raid-issues-western-digital-hard-disk
>> I went WD Black RE's and they are speedy and have been reliable.
> TLER is not necessary on linux software raid or zfs raid. It is needed
> on hardware raid or on windows software raid.
> John

I'm not doubting you John but I never know who to believe. When I had
problems with a 3-disk RAID1 using WD10EARS drives one of the reasons
I was directed to the RAID Edition 500GB drives was specifically
because they did support TLER. There was never another reason proposed
(that I remember) for that RAID not working correctly.

Whatever the reason I was completely unable to build a good RAID that
worked without delays using the WD10EARS. Possibly newer mdadm release
have solved this but if they have I haven't specically noticed any
discussion about it on the mdadm list which I am subscribed to.

I still have 4 or 5 of them sitting here. Should I spend the time to
see if they've become usable?


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