If one of the storage array controllers for either the Dell MD3860 or the Netapp E5660 is having a problem or is Offline, you may have to replace the controller.
You may also see this error in the recovery guru file in the storage bundle: Failure Entry 2: OFFLINE_CTL-Recovery Failure Type Code: 28
The controller has failed or has a red X.
The controller is offline.
To replace the controller, follow these steps. The controllers are hot-swappable.