RE: Random Reboots Part II (please help, I just don't get it)

["Gonzalez, Richard" <gonzaler cantv net>]

Mark Knecht wrote:
> On Sat, 2003-10-25 at 10:12, Waldher, Travis R wrote:
>
>
>>While a hardware problem isn't out of the question, there are few ways
>>for me to test this.
>>
>>The machine is a Compaq Proliant ML530, two power supplies
>>
>>Memory:
>>
>> 10:11am  up  8:18,  1 user,  load average: 0.06, 0.35, 0.22
>>235 processes: 234 sleeping, 1 running, 0 zombie, 0 stopped
>>CPU0 states:  0.0% user,  0.1% system,  0.0% nice, 99.0% idle
>>CPU1 states:  0.1% user,  2.0% system,  0.0% nice, 96.0% idle
>>Mem:   513340K av,  502716K used,   10624K free,       0K shrd,  276320K
>>buff
>>Swap: 1676872K av,   44604K used, 1632268K free                  137052K
>>cached
>>
>>Disks have plenty of space, most importanly, the root OS has 4.2GB free
>>sapace, and tmp has about 443MB of free space.
>>
>>All this server does, is serve NFS.
>
>
> There were a number of us that had this problem. We were all running Pro
> Tools under different versions of Windows. TomsHardware had some
> comments on specific motherboards having this sort of problem. Just a
> bit of noise in the power somewhere and the motherboard jumped to a
> reboot address (all FF's probably) and the machine just thought it was
> starting over.
>
> The machine, in my case, did not have to be under load for the problem
> to occur.
>
> I hesitated to even bring this up, as there is no test for it other than
> swapping the power supply. That's not difficult, but it's also not a
> guaranteed fix. In your case with two power supplies it could be only
> one causing trouble. Who knows?
>
> I wish you the best getting to the bottom of it.

Yes, Travis, if you have redundant power supplies AND the system will
run on one of them without whining too badly, try unplugging one and see
if the reboot goes away.  If it doesn't, plug that one back in and
unplug the other.

If neither does the fix, open up your box and reseat the memory, CPUs
and any PCI cards you have in there.  You may have a flakey connection
that's causing the problem.
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens vitalstream com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-                    Do you know where _your_ towel is?              -
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	If I remember correctly ML-530 has a normal operation with 2 power supplies
(minimum) and requires a 3rd one for redundancy.. so it won?t boot with just
one power supply plugged.