1. A method of backing up data associated with a cluster, comprising: receiving an indication to back up data associated with the cluster; and using a backup configuration data associated with the cluster to back up in a unified backup operation one or more save sets associated with virtual resources associated with the cluster and one or more saves sets associated with physical nodes associated with the cluster, including by storing each respective save set in a manner that associates the save set with a virtual or physical node comprising the cluster, wherein storing each respective save set in a manner that associates the save set with a virtual or physical node comprising the cluster includes associating each save set with a prefix or other ancillary data that indicates a cluster resource with which the save set is associated.