RAID 5 Multiple Hard-drives failure
Bob Chiodini
rchiodin at bellsouth.net
Tue Mar 14 16:25:02 UTC 2006
On Tue, 2006-03-14 at 10:26 -0500, Reuben D. Budiardja wrote:
> On Tuesday 14 March 2006 08:55, Bob Chiodini wrote:
> > On Tue, 2006-03-14 at 08:21 -0500, Reuben D. Budiardja wrote:
> <snip>
> > Reuben,
> >
> > Have you checked the power supply?
>
> I have not checked the power supply for the system. Any recommendation on how
> to do so ?
>
> > Have all of your failures been in the same machine?
>
> Yes, all in the same machine, that's why I suspect there's something else
> physically wrong.
>
> Thank you.
> RDB
> --
> Reuben D. Budiardja
> Dept. Physics and Astronomy
> University of Tennessee, Knoxville, TN
>
Reuben,
Open up the case and find an unused drive power connector. Measure the
voltage between the yellow and black, should be ~12VDC. The voltage
between the red and black should be ~5VDC. I'm not sure what the
tolerances are for your drives, maybe it's on their website. As a rule
of thumb, I'd not let the 12V get below 11.9V or above 12.1V (about
10%). The 5V should be above 4.8V and below 5.1V. These are guidelines.
The last time I opened a PC power supply the 12 and 5 volt supplies were
not independently adjustable.
Your BIOS may also tell you these voltages, along with various
temperatures. lm_sensors might work as well.
Bob...
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