On Windows Server systems where the cluster service is active, the cluster database will be captured during the system state backup. The system state backup will skip the cluster database and log a warning if the cluster service is not active.
A cluster database only need be restored if all nodes in a cluster lose their copy of the database. If just one node loses the database, the lost database will be restored from another node in the cluster.
If the database must be recovered, during a restore of the system state, the cluster database (CLUSDB) will be restored to the C:/PCBP/SystemState.dir/ (the exact path may differ if the system agent was installed to a directory other than the default). From the PCBP directory, run the utility cdrestore.bat to recover the cluster database. If a cluster database file exists in C:/PCBP/SystemState.dir, the utility will show the date that the database was restored and prompt you to ensure that the Cluster Service (ClusSvc) is stopped on all nodes of the cluster before continuing. Press y to continue and the database is restored. If the first attempt to restore the database fails, the utility will display the steps required to clear the existing clustering hive from the registry hive so that the database file may be restored. After the restore completes, the cluster service will need to be started to access the storage cluster.