In the storage management subsystem (SMS), an indicator of the availability of a volume for system management: the volume is not ready for system management because it contains data sets that are ineligible for system management; the volume is ready for system management because all of the data sets on a volume have an associated storage class and are cataloged in an integrated catalog facility (ICF) catalog; the volume will not be managed by the system because it contains no system-managed data sets and has not been initialized as system-managed. See also physical volume status.