I want to make a RAID5 array out of 3 disks, copy data from the one disk I have then clear it and add as a spare to the array. A similar magic I can do in linux with mdadm
utility (mdadm --create drv1 drv2 drv3 missing
& mdadm --add drv4
). I have a cloud backup so the possible risk of failure during the operation is fine.
Is this trick possible with MegaRaid controllers (and the 9271-8i in particular)?
The other option would be to make a RAID1 and then migrate it to RAID5 but it seams to by slower and troublesome way to go...