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Preparing the system for the replacement

You must gather information and shut down the degraded controller by taking it over if it is in an HA pair.



  1. Checking quorum on the SCSI blade
    If you are operating in a SAN environment and you are replacing a controller module, you must verify that each controller is in a SAN quorum with other controllers in the cluster.
  2. Pre-replacement tasks for systems that use Storage Encryption
    If you are replacing a controller module in a system with Storage Encryption enabled, you must first reset the authentication keys of the disks to their MSID (the default security ID set by the manufacturer). This is a temporary necessity to avoid losing access to the data.