Hi - any help appreciated. I replaced a disk on my 3220 (Ontap 9.1P14) with an identical disk. The only difference I can see is the firmware is NA02 while all the other disks are NA01. The disk reports init failed and broken - I did try unfail and also "storage disk firmware revert -disk..disk #" but still not working and showing same firmware on re plugging in. I have tried several disks from the replacements and all behave the same.