I have used those tests in the past but I'm a little worried that I  
might make matters worse if I test the drives currently in the array  
before having tried to recover whatever information I can.

Thanks,
Peter

Quoting Brian Candler [off-list ref]:

On 15/10/2013 13:40, peter@steinhoff.se wrote:

quoted

On another note, I took the failed drive I replaced in my array  
(/dev/sdh) and put it in another machine (win7) and run Western  
Digital's diagnosis software and it says the drive is OK.

Another type of drive test you can do is with smartctl:

smartctl -t conveyance /dev/sdX
... typically takes a couple of minutes
smartctl -l selftest /dev/sdX   # to monitor progress / completion

smartctl -t long /dev/sdX
... typically takes 6 hours on a 3TB drive
smartctl -l selftest /dev/sdX   # to monitor progress / completion

Regards,

Brian.

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