Replacing rootvg mirror disk

I've only done this once before and it was quite a bit different situation.

hisk0 [rootvg] is mirrored to hdisk1. hdisk1 needs to be replaced. Running AIX 5300-06-04. Is this sequence of commands corrrect?

unmirror rootvg hdisk1
reducevg rootvg hdisk1
I only know how to do this next step through smit:
Remove Disk from Operating System-Remove Disk without Data-select appropriate disk and remove.

cfgmgr -v
Replace drive
cfgmgr -v
mirror -m rootvg hdisk1

I know I'm probably missing something and appreciate any input/advice.
Thank you,
Karen Boddy
Capital City Libraries


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