Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Glossary 467
swap area
A disk region used to hold copies of memory pages swapped out by the system pager
process.
swap volume
A VxVM volume that is configured for use as a swap area.
transaction
A set of configuration changes that succeed or fail as a group, rather than individually.
Transactions are used internally to maintain consistent configurations.
volboot file
A small file that is used to locate copies of the boot disk group configuration. The file may
list disks that contain configuration copies in standard locations, and can also contain
direct pointers to configuration copy locations. The volboot file is stored in a
system-dependent location.
VM disk
A disk that is both under VxVM control and assigned to a disk group. VM disks are
sometimes referred to as VxVM disks or simply disks.
volume
A virtual disk, representing an addressable range of disk blocks used by applications such
as file systems or databases. A volume is a collection of from one to 32 plexes.
volume configuration device
The volume configuration device (/dev/vx/config) is the interface through which all
configuration changes to the volume device driver are performed.
volume device driver
The driver that forms the virtual disk drive between the application and the physical
device driver level. The volume device driver is accessed through a virtual disk device
node whose character device nodes appear in
/dev/vx/rdsk, and whose block device
nodes appear in
/dev/vx/dsk.
volume event log
The device interface (/dev/vx/event) through which volume driver events are reported
to utilities.