FreeBSD Crash without Errors, Warnings, or Panics

[Matthew Hagerty]

Andrew MacIntyre wrote:
> Alex Zbyslaw wrote:
>
> {...}
>
>> Several times now I have had Linux servers (and production quality 
>> ones, not built by me ones :-)) die in a somewhat similar fashion.  
>> In every case the cause has been either a flaky disk or a flaky disk 
>> controller, or some combination.
>
> I've seen an instance of somewhat similar symptoms where a power supply
> was sagging out of spec on one supply rail some time after startup.
> When some disk activity happened, the extra power consumption caused the
> voltage to sag further triggering the disk going AWOL.
>
> At the time this started to happen, the power supply was more than 12
> months old.
>
> -------------------------------------------------------------------------
> Andrew I MacIntyre                     "These thoughts are mine alone..."
> E-mail: andymac at bullseye.apana.org.au  (pref) | Snail: PO Box 370
>        andymac at pcug.org.au             (alt) |        Belconnen ACT 2616
> Web:    http://www.andymac.org/               |        Australia
I considered power problems, however the server has dual redundant 400 
Watt power supplies, and is in a server room and none of the other 
machines in there are having problems like this one.  I suppose it is 
possible that both supplies are failing, but that seems highly unlikely?

Matthew