The cluster quorum is backed up as part of System State.
If Active Directory is running on the target server in the cluster, do not select Restore cluster quorum.
See Restoring the cluster quorum to a Windows 2000 and Windows Server 2003 node running Active Directory to a Microsoft cluster.
You may need to specify a new disk to which the cluster quorum will be restored.
See Specifying a new drive letter for the cluster quorum disk.
To restore the cluster quorum
Select Force the recovery of the cluster quorum even if other nodes are online and/or disk signatures do not match in the following circumstances:
If you are not able to take the other nodes in the cluster offline. When this option is selected, the cluster service for any nodes that are online is stopped.
If the disk that the cluster quorum previously resided on has been changed. The disk may have been replaced with a new one, or the disk configuration may have been changed so that the cluster quorum now resides on a different disk. This option allows the drive letter of the disk that the cluster quorum was on to remain the same, even if the configuration has changed and the disk signatures contained in the restore media do not match the disk signatures contained in the cluster quorum.
Select any additional options as needed for this restore job.
When the restore operation is complete, use the cluster administrator software to restart the cluster service on nodes on which it was stopped.