I have 5 x 1TB Discs in RAID 5 configuration, all working fine. I then added 2 additional 1TB drives with the intent of expanding capacity.
So I selected the Migrate RAID. No option to change the type of RAID I could see. Then I selected the new drives, and got error messages about the RAID size not being correct. After playing around I found you have to migrate one drive at a time - so a slow process.
My quesion: am I correct that you have to migrate one at a time, rather than selecting both new drives at the same time? Any way round this?