cause of reboot
nightrecon at hotmail.com
Tue Oct 1 00:32:54 UTC 2013
kpneal at pobox.com wrote:
> While we're throwing ideas onto the table let me mention power supplies.
> Power supplies and hard drives are in a race to see which one will fail
> first. It may be that the power supply is marginal and added load from
> the drives being hit hard may send it over the edge. How heavily loaded
> is the machine in question?
Absolute and total agreement with this. As they age and the filter caps leak
and dry out more it will eventually become apparent. But in the meantime the
output DC can just about meet spec up until really loaded. Then the ripple
becomes so excessive it's not quite "DC" any longer. You can clearly see it
using an oscilloscope.
The 0300 AM periodic does hammer a machine enough to possibly push a
marginal power supply over the edge. I once had a box where the RAM chips
would "sing" with a high-pitched whistle only during the 0300 periodic run.
It sounded just like the horizontal output on a television right before
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