To fully restore a cluster on which Backup Exec is installed, you can use IDR to restore the cluster node and all shared disks or you can rebuild the cluster. To remotely restore the cluster catalog the media that contains the backup sets of the cluster nodes and the shared disk.
To recover Backup Exec on a Microsoft Cluster with IDR:
Run the IDR Recovery Wizard on one of the nodes. During this process, use the disk manager to repartition all shared disks to their original configuration. Restore the local disk, system state, and the data files to the shared disk.