The cluster group contains resources that are related to cluster administration only and are considered core resources. If you add additional resources to the group, you may not be able to administer the cluster effectively. If resources in the cluster group fail, failover may be triggered, or you may not be able to administer the cluster effectively. Therefore, Microsoft recommends that the quourm resource remain in a group that has core resources only.
For best results and high availability of the cluster, do not add resources to the cluster group. Instead, put additional resources in other groups as appropriate.For additional information about the quorum resource, click the following article number to view the article in the Microsoft Knowledge Base:
Quorum drive configuration information