Remove E-Series controllers
After preparing for the upgrade, you can remove the controllers, and if necessary, remove the battery.
Step 1: Remove controller
For information about removing controllers from EF80 and EF50 storage systems, see EF50 and EF80 - Step 1: Remove the controller.
Remove the controller canister so you can upgrade it with a new one. You must disconnect all cables and remove any SFP transceivers. Then, you can slide the controller canister out of the controller shelf.
Make sure you have the following:
-
An ESD wristband or take other antistatic precautions.
-
Labels to identify each cable that is connected to the controller canister.
Perform the following steps for each controller in the controller-drive tray.
If you are upgrading controllers in a duplex controller-drive tray, repeat all steps to remove the second controller canister.
-
Put on an ESD wristband or take other antistatic precautions.
-
Label each cable that is attached to the old controller canister. Depending on the HIC configuration, you might be able to reconnect some cables after you replace the controller canister.
-
Disconnect all of the interface and Ethernet cables from the old controller canister.
If fiber-optic cables are present, you can use the two release levers to partially remove the controller canister. Opening these release levers makes it easier to press down the fiber-optic cable release tab.
To prevent degraded performance, do not twist, fold, pinch, or step on the cables. -
If the old controller canister contains a Fibre Channel HIC or an InfiniBand HIC, remove the small form-factor pluggable (SFP+) transceivers (for Fibre Channel) or quad SFP (QSFP+) transceivers (for InfiniBand) from the HIC, and save them for possible reuse.
-
Remove controller A.
-
Unlock and rotate the release handles out to release the controller canister.
-
Using the release handles and your hands, pull the controller canister out of the controller-drive tray.
The following figure is an example of the general location for the release handles on controller models. Controller shelves and controller-drive trays have a similar configuration for the release handles.

(1) Controller canister
(2) Cam handle
-
-
Set the old controller canister on a flat, static-free surface near the controller-drive tray with the release levers up. Position the controller canister so that you can access the top cover.
-
(Conditional) If you are upgrading controllers in a duplex controller-drive tray, repeat all steps to remove the second controller canister.
-
If you intend to use the battery from the old controller in the new controller, go to the next part of the section; otherwise go to Install new controllers.
Step 2: Remove battery
Remove the battery only if you intend to use the battery from the old controller canister in the new controller canister.
-
Press down on both of the top cover latch buttons on the old controller canister, and slide the top cover to the rear of the canister.
-
On your model of controller-drive tray, release the tab that secures the battery to the controller canister to release the old battery.
-
Remove the battery by sliding it towards the rear of the old controller canister.
Go to Install new controllers.