Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

510 Glossary
dissociate
The process by which any link that exists between two VxVM objects is removed. For example,
dissociating a subdisk from a plex removes the subdisk from the plex and adds the subdisk to the free
space pool.
dissociated plex
A plex dissociated from a volume.
dissociated subdisk
A subdisk dissociated from a plex.
distributed lock manager
A lock manager that runs on different systems in a cluster, and ensures consistent access to distributed
resources.
enabled path
A path to a disk that is available for I/O.
encapsulation
A process that converts existing partitions on a specified disk to volumes. Encapsulation does not
apply to HP-UX.
enclosure
See disk enclosure.
enclosure-based naming
See device name.
fabric mode disk
A disk device that is accessible on a Storage Area Network (SAN) via a Fibre Channel switch.
FastResync
A fast resynchronization feature that is used to perform quick and efficient resynchronization of stale
mirrors, and to increase the efficiency of the snapshot mechanism. Also see Persistent FastResync and
Non-Persistent FastResync.
Fibre Channel
A collective name for the fiber optic technology that is commonly used to set up a Storage Area
Network (SAN).
file system
A collection of files organized together into a structure. The UNIX file system is a hierarchical
structure consisting of directories and files.
free space
An area of a disk under VxVM control that is not allocated to any subdisk or reserved for use by any
other VxVM object.
free subdisk
A subdisk that is not associated with any plex and has an empty putil[0] field.
hostid
A string that identifies a host to VxVM. The hostid for a host is stored in its volboot file, and is used
in defining ownership of disks and disk groups.