RAID (mirror) HD failure

[S.Boardman]

Hello. I have 2 HD mirrored. One went critical, although when I tried it the
second time (like now) it works OK. There was a soft ticking sound.

Obviously I need to replace the drive. The problem is, which drive? Since
they are both now showing as working, I don't want to risk removing the
wrong one!

The Promise Fastrak utility said it was channel #2, does this refer to the
IDE sockets on the m/b? These are labelled IDE 3 & 4.

It's an MSI KT3 Ultra MS 6380E.

Any ideas?

 

[RBM]

It will probably reoccur soon and when it does, just unplug one of them.
You've got a fifty fifty and if you're wrong, switch them