On Mon January 11 2010, Majed B. wrote:

Voltage spikes, disks heating (monitored by smartd) & sector
corruption (monitored by smartd) are what I can think of for the time
being.

Would that actually make it so a hot spare wouldn't get used automatically? 
I thought the point of a hot spare was to take over for a failed disk /no 
matter what/. Doesn't really make much sense is many of the more common 
error cases cause a hot spare to be ignored.

On Mon, Jan 11, 2010 at 9:00 PM, Tim Bock [off-list ref] wrote:

quoted

Hello,

Excluding the obvious multi-disk or bus failures, can anyone describe
what type of disk failure a raid cannot detect/recover from?

I have had two disk failures over the last three months, and in spite
of having a hot spare, manual intervention was required each time to
make the raid usable again.  I'm just not sure if I'm not setting
something up right, or if there is some other issue.

Thanks for any comments or suggestions.

Tim

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Thomas Fjellstrom
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