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How can I physically identify a single drive in a RAID array?

I have a computer with several drives in it, all identical, all part of a RAID. One of those drives is failing (sdc), but I can't tell which physical drive is sdc... any suggestions?

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marked as duplicate by Oli, Marco Ceppi Dec 8 '10 at 3:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Did you try sudo fdisk -l ? – Saifallah Dec 6 '10 at 10:36
up vote 5 down vote accepted

This will output the serial number of the disk, which should be printed on its label:

sudo hdparm -i /dev/sdc
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Perfect, thanks. – Jeremy Dec 6 '10 at 11:06

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