Robin Laing wrote:
I was looking at 5 disks minimum in the new server. The better recovery is what I am concerned with. Just in case. Backing up a TByte of data is a pain.
The probability of two simultaneous disk failures in an array that small are quite small.
How hard to move from RAID 5 to RAID 6 using software RAID?
To the best of my knowledge, Linux doesn't offer RAID level migration. You'd have to back up your data, create a new RAID device, and restore.