once you delete all file system that use that pool, simply "nas_disk delete -perm" and then reconfigure your raid groups.
I inadvertently created a R5 sata disk pool (2 6+1 r5 groups plus 1 HS) on our NS960 instead  of a 12+2 Raid6. I didn't notice it until after I had placed production data on it.  How bad is this? I can be in a position to create another 2TB sata disk pool on the same celerra frame and migrate over.  any thoughts would be appreciated.  thanks.
2TB Sata pool