Veritas Storage Foundation Cross-Platform Data Sharing 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

Glossary
AIX coexistence label
Data on disk which identifies the disk to the AIX volume manager (LVM) as being
controlled by VxVM. The contents has no relation to VxVM ID Blocks.
back-rev disk group
A disk group created using a version of VxVM released prior to the release of CDS. Adding
CDS functionality rolls over to the latest disk group version number; see also current-rev
disk group.
CDS (Cross-platform Data Sharing)
Sharing data between heterogeneous systems (such as Solaris and HP-UX operating
systems), where each system has direct access to the physical devices used to hold the data,
and understands the data on the physical device. Sharing in this sense should not be
confused with the sharing provided with CVM by means of a shared disk group.
CDS disk
A disk whose contents and attributes are such that the disk can be used for CDS as part of a
CDS disk group. In contrast, a non-CDS disk cannot be used for CDS, nor can it be part of a
CDS disk group. CDS disk also contains a set of AIX Coexistence Labels, HP-UX Coexistence
Labels/VxVM ID Blocks, and Platform Blocks.
CDS disk group
A VxVM disk group whose contents and attributes are such that the disk group can be used
to provide CDS. In contrast, a non-CDS disk group (that is, a back-rev disk group or a
current-rev disk group) cannot be used for CDS. A CDS disk group is a current-rev disk
group with the CDS attribute set for the disk group. A CDS disk group can only contain CDS
disks.
CFS
Cluster file system. A VxFS file system mounted on a selected volume in cluster (shared)
mode.
children
Objects that belong to an object group.
cluster
A set of host machines (nodes) that shares a set of disks.
cluster file system
See CFS.
current-rev disk group
A disk group created using a version of VxVM providing CDS functionality; however, the
CDS attribute is not set. If the CDS attribute is set for the disk group, the disk group is
called a CDS disk group.