Add Disk-shelf in Netapp

1)physically mount the disk shelf in filer rack.
2)break the cluster between head01 and head02 using "cf disable" command
3)power down the head02 filer using "halt -t" command
4)set the shelf id in new disk shelf and set the switch to 2GB position.also connect the cable in the backside of the disk shelf.
5) First,Turn on the all the disk shelf, After 3 minutes, Turn on the filer head.
6)log in to the filer and check the filer ststus using "sysconfig " command,
7) add those disk in exsiting aggr and we keep 2 or 3 disk as a spare disk.
8) enable the cluster between head01 using "cf enable " command.
9)check the cluster status using "cf status" command.