Is it possible to change a drive from one raidgroup to another raidgroup? I have a FAS2020 with 12 disks in raidgroup 0 (rg0). I added a new DS14 shelf and 7 disks to the aggr. But the new disks ended up in another raidgroup (rg1). It was because the maximum raidsize was set to 12 per raidgroup.
Guess what, the problem is each raidgroup requires 2 parity disks (RAID-DP), so now I ended up with 4 parity disks for 18 disks (+ 1 spare)!! that's 4/18 = 22.22% of space GONE not to mention the WAFL already taken another 20% toll.
Now that I overrided the raidsize to 28, I want to move the 7 disk from rg1 to rg0 so I can save two disks from being parity disks.