On Thu, 10 Oct 2013 22:11:49 +0100 Wayne Stallwood ALUGlist@digimatic.co.uk allegedly wrote:
On 10/10/13 15:47, Mark Rogers wrote:
The "correct" fix is to use the wdidle3 tool from DOS (Google it) but I also found a Linux version here: http://idle3-tools.sourceforge.net/
.. which looks to work.
AFAIK WD Green's aren't supported in Raid configurations for this reason or at least that used to be the case.
Oh bugger...
Guess what disks I chose for both my desktop upgrade and my new build backup server.
On checking my disks, this is what I see.
Desktop 2TB WDC WD20EARX purchased January this year /dev/sda Power_On_Hours 2143 Load_Cycle_Count 148616
Server (built as RAID 1) 2 X 2TB WDC WD20EARX purchased May of this year.
/dev/sda Power_On_Hours 3388 Load_Cycle_Count 386649
/dev/sdb Power_On_Hours 3389 Load_Cycle_Count 386087
For comparison I checked an old 1TB USB disk which been attached to an NSLU2 running 24/7 for well over three years. That disk is also a caviar green, but the model number is WDC WD10EAVS.
/dev/sda Power_On_Hours 29888 Load_Cycle_Count 107
Some difference!
All the sites I have read as a result of this discussion here suggest that whilst 300,000 load cycles is probably a reasonable lifetime max (so my 6 month old server is fsckd) up to a million may be possible.
So, given that I should probably change my shiny new disks PDQ, I'll ask the same question Mark did - what can people recommend for a server which is primarily a NAS backup (it is also my DNS server and a DLNA server for my MP3 and MP4 files)?
Mick
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Mick Morgan gpg fingerprint: FC23 3338 F664 5E66 876B 72C0 0A1F E60B 5BAD D312 http://baldric.net
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