On Tue, 8 Mar 2016, Ram Ramesh wrote:
My disks have about 10K hours (my server only runs from 4pm-2am). I
think I have quite a bit of life left assuming an on/off cycle is not as
bad as extra 14 hours of run time.
I had very high failure rates of the early 2TB WD Greens, but I still have
some WD20EARS and WD20EADS that are alive after 58k hours.
One of the slightly lower power on time ones has a scary load cycle count
though:
Device Model: WDC WD20EARS-00S8B1
9 Power_On_Hours 0x0032 033 033 000 Old_age Always - 49255
193 Load_Cycle_Count 0x0032 001 001 000 Old_age Always - 1317839
I'm running this as RAID6+spare and I'm just going to let these run until
they fail and replace them with WD REDs one by one. I clearly had bathtub
effect where I had several drives I replaced under warranty in the first
1-2 years of their lifetime, but the ones that replaced them, and the ones
that didn't fail, still seems to be doing fine.
I have two drives with reallocated sectors, but it's 3 and 5 sectors
respectively, so this is not worrying yet.
I wish we had raid6e (or whatever to call it) with 3 parity drives, I'd
really like to run that instead of raid6+spare.
--
Mikael Abrahamsson email: swmike@xxxxxxxxx
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