Re: Server hanging
- From: "Dave Nickason [SBS MVP]" <gwdibble@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 6 Apr 2006 11:29:38 -0400
Good information. Thanks.
From experience, I would closely monitor that array for a while to make surethe drives are both good. I had a drive that was reporting a lot of errors.
Dell support had me run tests on the drive, reseat it in the backplane, etc.
After all that, it seemed fine. But it failed completely 2-3 days later.
Lesson learned.
"stephen" <stephen@xxxxxxxxxxxxxxx> wrote in message
news:eZ2auJWWGHA.4972@xxxxxxxxxxxxxxxxxxxxxxx
Follow up for the record:
Server is a Dell SC420 and the Open Manager is not supported on the SC
range. I used the available diagnostics utilites from the Dell site, but
all tests were passed. (Note to self - don't buy SC range for future
clients)
I visited the site yesterday to have a look at the server. No problems
with fans or ventilation and initially the server behaved well. I took the
opportunity to update BIOS, firmware and drivers with latest versions from
Dell site.
After one of the reboots for installing s/w the server started hanging
every 10 seconds or so for around 1 or 2 seconds: on the console the mouse
would just stop responding for a couple of seconds then start working
again - strange.
I restarted the server again and this time one of the drives in the mirror
set was reported as missing (good news - a real problem!). I opened the
server, re-seated cables and the drive was detected again but now the
mirror set was now in degraded mode. I used the Dell RAID manager to
rebuild the failed drive and now the server seems to be behaving itself
(touch wood).
Lessons learned:
o hanging behaviour was most likely due to problematic RAID mirror
o marginal SATA RAID failure is not clearly detected at BIOS or OS level
o confidence in SATA RAID has been eroded. Will now prefer tried and
tested SCSI RAID solutions.
Thanks for everyone's help.
Stephen
Russ Grover wrote:
Dave is Correct,
The other nice thing about Dell Open Manage is you can set it up to
reboot the server, on hang
*Yes this doesn't Fix the problem, but it will keep you from having to
come in on a weekend to reboot the server.
I'd run some tests on your Memory.
Russ
.
- References:
- Server hanging
- From: stephen
- Re: Server hanging
- From: Dave Nickason [SBS MVP]
- Re: Server hanging
- From: stephen
- Server hanging
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