Hi Jeremy,
<SNIP: both old disks were fine>
Anyway, if heavy disk/controller load appears to be causing these
problems, you could have power-related issues. Possibly the combination
of two disks + heavy I/O causes enough power draw that the ICH9 starts
to behave oddly. Voltages which deviate too much can cause odd things
to happen to hardware. If you have the time/money, you might try
replacing the PSU in your system to see if there's any improvement; your
BIOS should be able to provide you Hardware Monitoring statistics
(voltages). Write these down before and after the PSU swap. You don't
need to go crazy and buy a 1000W PSU or anything, but 450-750W is pretty
normal these days.
As this is a 19" 1U box, I'd need to buy a replacement PSU from Dell or
a reseller. Not too expensive, but I'd like to avoid that.
While looking through the CVSweb of RELENG_8, I found that ATA timeouts
have been raised in 8 recently. On
http://wiki.freebsd.org/JeremyChadwick/ATA_issues_and_troubleshooting
and other URLs, like
http://linux-bsd-sharing.blogspot.com/2009/03/howto-fix-sata-dma-timeout-issues-on.html,
I found that increasing the timeout might help. So that's what I'll try
next time it happens again. If that still doesn't work, I can take a
better look at the voltage levels.
--
Pieter
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