I added a second shelf to an existing FAS3210. On the original configuration there was a single FC cable from the 3210 to the shelf, I basically daisy chained to the second shelf and ran another FC to the 3210, as per the wiring instructions. I then changed the shelf ID from 00 (used by the original) to 01.
Short story short I can't see the drives. Executing 'sysconfig' I can see them (slot 0: SAS Host Adapter 0a 48 disks; 26880.0GB, or double of previous count/capacity), executing 'disk show -n', which should show the new disks, doesn't show anything.