Determining Which Physical Drive Matches Which Logical Device

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To: "For users of Fedora Core releases" <fedora-list@xxxxxxxxxx>
Subject: Determining Which Physical Drive Matches Which Logical Device
From: vamythguy <vamythguy@xxxxxxxxx>
Date: Sun, 31 Dec 2006 22:14:29 -0500
Reply-to: For users of Fedora <fedora-list@xxxxxxxxxx>

I have a RAID-5 array with four SATA disks in it. Apparently, two are going bad, so I want to replace them. But, I'm not sure which physical drives to pull. Given the following:

cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sda[0] sdd[3] sdc[2] sdb[1]
735351936 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]

Any suggestions?

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