You remove a controller canister to replace the failed canister with a new one. Perform this task only if your storage array has
one controller (simplex configuration).
Steps
Remove controller canister (simplex)
When you remove a controller canister, you must disconnect all cables. Then, you can slide the controller canister out of the controller shelf.
Remove battery (simplex)
After removing the controller canister from the controller shelf, you can remove the battery.
Remove host interface card (simplex)
If the controller canister includes a host interface card (HIC), you must remove the HIC from the original controller canister, so you can reuse it in the new controller canister.