Re: RAID 5 Multiple Hard-drives failure

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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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