[SATLUG] OT: Help w-hardware diagnosis

Todd W. Bucy todd at bucy-medrano.me
Wed Aug 29 08:56:27 CDT 2012

On Mon, 2012-08-27 at 21:02 -0500, Alan Lesmerises wrote: 
> I recently picked up an NAS server and went to try & set it up and 
> encountered a problem that I wanted to run past you for any ideas you 
> might have.
> It takes up to 4 SATA/SAS drives, but it didn't come with any.  I tried 
> to power it up as-is, and it came alive but failed to boot (according to 
> an indicator light on the front panel).  I powered it down, tried 
> installing 2 unused SATA drives that I had lying around, and pressed the 
> power button and got nothing.  I tried a few other things and found that 
> if I installed a single drive only, it would power-up.  In fact, when I 
> had the drives removed, then inserted the 2nd drive, it shut down.  At 
> first I thought there might be something wrong with the PS, but when I 
> tested it using a standard PC PS tester it looks like it's ok.
> So here's where I have a couple of questions:
> 1. I have a 24-pin PC PS tester, the PS for the server is 20-pin but it 
> fits in the first set of 20 pins in the tester.  Would a standard 20-pin 
> PC PS be the same as the first 20 pins of a 24-pin PS?  In other words, 
> can I believe the tester in this case?
24 pin tester should work just fine testing a 20 pin connector, so yes
believe it. 
> 2. If the PS isn't the source of the problem, what would you think could 
> be the problem?
if its not the PS then it could be one of the following: bad firmware
(is it possible to access this device via minicom?), bad mother board
(in which case its a paper weight unless you replace the mobo), bad
cables (not likely but possible try to replace the sata cables check
your connectors)

> TIA.
> Al Lesmerises
> p.s. - Sorry I missed the Linux Day festivities (I had other obligations 
> ...)

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