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Re: [opensource-62] riddle me this...

From: Jeff B.
Sent on: Saturday, November 24, 2012 6:38 PM
This is probably unrelated.  From my experience on the Cisco rebadged IBM server, I can tell you the 8 series controllers had some pretty critical issues with RAID1 in particular.  Might want to verify that your firmware is up to date on those.

You have SATA or SAS drives plugged in?  (and is their firmware up to date, had a lot of issues with drives of that vintage "going away" for a sec which caused the controller to mark them offline.  AFAIK that was fixed with the most recent firmware updates that IBM released (and HP too for that matter with similar vintage 73 and 146GB SAS drives)

I'd pull up the defects involved, but I don't have access to the documentation I did at Cisco for those critical Firmware Updates...  :)


On Sat, Nov 24, 2012 at 6:28 PM, mowgli <[address removed]> wrote:
i have an ibm xseries 366 quad cpu w/ 8 gb ram.  it also has IBM ServeRAID-8i SAS Controller w/ 4 - 73 gb sata drives in raid 10 array.

almost daily i get error that 1 of the drives failed/isnt accessible/whatever.  today i got that for 2 drives!  luckily it was the right 2/4 yeesh!  so it does an auto rebuild of the mirrored drives upon reboot, albeit after some rescans/reboots.

but the drives pass bad-blocks 100% w/ no errors or bad sectors.  & the above occurs even if i use other drives.  sometimes i switch the drive bay to get it to rebuild, sometimes not.  it just seems random.  questions:

is my raid card bad?
is my server mobo or other component bad?
can it actually be the drives?
can it be that damn kvm again?! (yes this server is hooked up to it too.)

how/what do i test/check to see what exactly is causing this?  the only way i know its "bad" drive is b/c server console outputs i/o errors when it happens.

ps i have the exact same setup on another server & it reports a "bad" drive about 1x/mo, if that.  this server is doing it daily.  something is up!

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