On 09/ 9/11 06:40 AM, Richard Elling wrote:
On Sep 7, 2011, at 2:05 AM, Roy Sigurd Karlsbakk wrote:
A drive retrying a single sector for two whole minutes is nonsense, even on a
desktop
or laptop, at least when it does so without logging the error to SMART or
summing up
the issues so to flag the disk unusable. And, beleive it or not, a drive
spending 2 minutes
trying to fetch 512 bytes from a dead sector is quite unusable when the the
number of
bad sectors start climbing.
Yes, but that is the current state of the market, and this change has become
more pronounced
in the past few generations. Experienced systems architects know this and
design accordingly.
I think I've fallen victim to this one! I had a pair of older WD black
drives in a test system in a hostile environment (my garage!) for 18
months without any issues so I recently replaced the remaining 8 drives
in the pool with the current model. I now see these warnings in my logs:
scsi: [ID 243001 kern.warning] WARNING:
/pci@0,0/pci8086,3410@9/pci15d9,400@0 (mpt_sas0):
mptsas_handle_event_sync: IOCStatus=0x8000, IOCLogInfo=0x31120303
Now whether that's due to a change of controller, or one of the new
drives wandering off into la-la land I'm not sure.
The disk vendors provide product roadmaps so you can plan for the future
(Seagate's is quite
good reading :-)
Indeed. I'll have to update my reading habits!
--
Ian.
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