Anyone tried dd'ing Raidmembers?

Posted by DusteD on Server Fault See other posts from Server Fault or by DusteD
Published on 2014-06-06T00:08:14Z Indexed on 2014/06/06 3:27 UTC
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I want replace all disks in a 10 disk raid6 (linux software raid).

I could do this by pulling a disk, let the array rebuild, rinse, repeat.

But this would take a very long time, and cause 10 rebuilds, which would most likely stress all 10 disks much more than simply reading each disk through once.

My question is thus:

Could I just shut down the array, and dd each old disk to a new disk and then start the array with the 10 new disks?

In an ideal world, I would build another server and just copy the data via network, but this is not an ideal world.

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