Each Sun Cluster logical host has at least one diskset containing one or more file systems or raw partitions. Sun Cluster requires that each logical host has one file system that is special, in that it must exist and must have a particular name (that is, it must be mounted on a particular directory name in the name space hierarchy). When Sun Cluster is first installed and configured, the scconf(1M) program assists the administrator in creating the required file system, thus following the required convention. Sun Cluster uses the term administrative file system to refer to this special required file system.