February 20, 20251 yr Scenario is, I have two servers, and I want to replace a disk in the main server with a larger one. I have the new disk precleared and ready to go in the 2nd server; and no free drive bays in the main server. Ideally, I'd like to mount the new drive remotely in the main server (unassigned devices plugin?); make a bit-for-bit copy of the existing drive onto the new one (dd?); expand the filesystem on the new one (if that's the right term), and then simply swap them over, with parity already valid. No need to do any rebuilding, thrash all the disks for a couple of days etc. etc. Hunting around on the forums it seems that all these things are theoretically possible, I'm just not really sure of the commands I would use (particularly for the copy and expand parts). Any pointers (or existing guides etc.) gratefully appreciated.
February 20, 20251 yr Community Expert Parity would not be valid, assuming the array was in use, also the partition would not be correct with a dd copy, and you would need to enlarge it before expanding the filesystem, why not just do a standard rebuild and keep the old disk while it's not done.
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