On 9/25/11 4:54 PM, Stan Hoeppner wrote:
Are the drives screwed into the case's internal drive cage?
Yes.
Directly
connected to the motherboard SATA ports with cables?
Yes. I've 6 SATA3 ports on the motherboard and the drives are connected
directly.
Or, do you have the
drives mounted in any kind of SATA hot/cold swap cage? The cheap ones of
these are notorious for causing exactly the kind of drop outs you've
experienced. Post a link to your case and any drive related peripherals.
I don't have a hot/cold swap cage. This is my case:
http://www.fractal-design.com/?view=product&category=2&prod=54
Did you suffer a power event? I.e. a sag, brown out?
No, nothing like that.
Is the system
connected to a good quality working UPS?
It is connected to an UPS but not an expensive one.
Something else you should always mention: How long did it all "just
work" before having problems? A few hours? Days? Weeks? Months?
Two of the drives were falling out of the array pretty often.
My motherboard has a built in RAID controller which I do not use.
To begin with the BIOS settings were set to recognize drives as IDE
resulting in two of the drives connected to SATA 1 and SATA 2 ports were
failing and dropping off the array.
They would show as UDMA/100 drives whereas the other drives were showing as
SATA link up 6.0 Gbps (SStatus 133 SControl 300)
ATA-8: ST2000DL003-9VT166, CC32, max UDMA/133
I changed this BIOS setting and all the drives have been recognized as
the same with the same speed.
I also bought new SATA cables for the failing drives, specifically for
SATA 3. That did not help and the drives kept on failing (maybe once a
week?). These 2 drives always failed at about the same time.
Shortly after a 3rd. drive failed leaving me with a broken Raid array.
Had you
made any hardware changes to the system recently before the failure
event?
No, there were no changes.
If so what? Did you upgrade your kernel/drivers recently, or any
software in the storage stack? Is the PSU flaky? How old is it? A flaky
PSU can drop drives out of arrays like hot potatoes when there is heavy
access and thus heavy current draw.
The PSU should be fine. I pulled it off a working server which had been
stable for long time.
--
Marcin M. Jessa
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