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Completing system restoration

To complete the replacement procedure and restore your system to full operation, you must recable the storage, confirm disk reassignment, restore the Lenovo Storage Encryption configuration (if necessary), and install licenses for the new controller.



  • Recabling the system
    After running diagnostics, you must recable the controller module's storage and network connections.
  • Reassigning disks
    If the storage system is in an HA pair, the system ID of the new controller module is automatically assigned to the disks when the giveback occurs at the end of the procedure.
  • Installing licenses for the replacement controller in ONTAP
    You must install new licenses for the replacement controller if the degraded controller was using ONTAP features that require a standard (controller-locked) license. For features with standard licenses, each controller in the cluster should have its own key for the feature.
  • Restoring Storage Encryption functionality
    After replacing the controller module or NVRAM module for a storage system that you previously configured to use Storage Encryption, you must perform additional steps to ensure uninterrupted Storage Encryption functionality. You can skip this task on storage systems that do not have Storage Encryption enabled.
  • Verifying LIFs
    Before returning the replacement controller to service, you should verify that the LIFs are on their home ports and reset automatic giveback.
  • Setting and verifying system time after replacing the controller
    You should check the time and date on the replacement controller module against the healthy controller module in an HA pair. If the time and date do not match, you must reset them on the replacement controller module to prevent possible outages on clients due to time differences.