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.


  1. Put on an ESD wristband or take other antistatic precautions.
  2. Label each cable that is attached to the controller canister.
  3. Disconnect all the cables from the controller canister.
    Attention: To prevent degraded performance, do not twist, fold, pinch, or step on the cables.
  4. If the HIC ports on the controller canister use SFP+ transceivers, remove the SFPs.
    Because you must remove the HIC from the failed controller canister, you must remove any SFPs from the HIC ports. However, you can leave any SFPs installed in the baseboard host ports. When you are ready to cable the new controller, you can simply move those SFPs to the new controller canister. This approach is especially helpful if you have more than one type of SFP.
  5. Confirm that the Cache Active LED on the back of the controller is off.
    The green Cache Active LED on the back of the controller is on when cached data needs to be written to the drives. You must wait for this LED to turn off before removing the controller canister.
    Note: The figure shows an example controller canister. Your controller might have a different number and a different type of host ports.

    Cache Active LED

  6. Squeeze the latch on the cam handle until it releases, and then open the cam handle to the right to release the controller canister from the midplane.

    Controller canister Cam handle

  7. Using two hands and the cam handle, slide the controller canister out of the shelf.
    Attention: Always use two hands to support the weight of a controller canister.

    When you remove the controller canister, a flap swings into place to block the empty bay, helping to maintain air flow and cooling.

  8. Turn the controller canister over, so that the removable cover faces up.
  9. Place the controller canister on a flat, static-free surface.

After you finish

Go to Remove battery (simplex).