HP SmartArray P410i - Migrate from RAID 0 to RAID 1
The hpacucli command-line lets you do it. (Make sure slots are correct, of course …)
Assign disk to logical drive:
hpacucli ctrl slot=0 ld 1 add drives=allunassigned
After synchronization finished, migrate
hpacucli ctrl slot=0 ld 1 modify raid=1
You can do it with the GUI but it’s a two step process so migrate RAID level won’t show up at first because there’s only one disk in the array. It’s a two step process with the CLI too of course … modify raid=1 won’t work if you use that command first.
This is exactly the same process as the lists for the CLI but done through the GUI :-
First add the new drive to the array then it will re-level it to a two drive RAID 0 with half the space unused.
Second migrate the RAID level.
Why they don’t allow a one-step adding of a mirror I’ll never know, it’s trivial to code and HP’s way takes much longer because there are two re-levelings involved although it does that in background so you can carry on working while it’s doing it.