Prepare to replace controller

When a controller canister fails, you must replace it. You prepare to replace a controller canister by verifying that the replacement controller canister has the correct FRU part number, backing up the configuration, and collecting support data.


  1. Unpack the new controller canister, and set it on a flat, static-free surface.
    Save the packing materials to use when shipping the failed controller canister.
  2. Locate the MAC address and FRU part number labels on the back of the controller canister.
  3. From SANtricity System Manager, locate the replacement part number for the controller canister you are replacing.
    When a controller has a fault and needs to be replaced, the replacement part number is displayed in the Details area of the Recovery Guru. If you need to find this number manually, follow these steps:
    1. Select Hardware.
    2. Locate the controller shelf, which is marked with the controller icon .
    3. Click the controller icon.
    4. Select the controller, and click Next.
    5. On the Base tab, make a note of the Replacement Part Number for the controller.
  4. Confirm that the replacement part number for the failed controller is the same as the FRU part number for the replacement controller.
    Attention: Possible loss of data access – If the two-part numbers are not the same, do not attempt this procedure. In addition, if the failed controller canister includes a host interface card (HIC), you must install that HIC into the new controller canister. The presence of mismatched controllers or HICs causes the new controller to lock down when you bring it online.
  5. Back up the storage array's configuration database.
    If a problem occurs when you remove a controller, you can use the saved file to restore your configuration.
    1. In System Manager, navigate to the support page.
    2. Select the Support Center tab.
    3. Select Diagnostics tab.
    4. Select the Collect Support Data.
  6. If the controller is not already offline, take it offline now using SANtricity System Manager.
    1. Select Hardware.
    2. If the graphic shows the drives, select Show back of shelf to show the controllers.
    3. Select the controller that you want to place offline.
    4. From the context menu, select Place offline, and confirm that you want to perform the operation.
  7. Wait for SANtricity System Manager to update the controller's status to offline.
    Attention: Do not begin any other operations until after the status has been updated.
  8. Select Recheck from the Recovery Guru, and confirm that the OK to remove field in the Details area displays Yes, indicating that it is safe to remove this component.

After you finish

Go to Remove failed controller.