VERITAS Volume Manager 4.1 Administrator's Guide

Understanding VERITAS Volume Manager
How VxVM Handles Storage Management
Chapter 112
The figure, “Connection Between Objects in VxVM,”, shows the
connections between Volume Manager virtual objects and how they
relate to physical disks. The disk group consists of two VM disks: disk01
has a volume with one plex and two subdisks, and disk02 has a volume
with one plex and a single subdisk
Figure 1-5 Connection Between Objects in VxVM
Disk Groups
A disk group is a collection of VM disks that share a common
configuration. A disk group configuration is a set of records with detailed
information about related VxVM objects, their attributes, and their
connections. The default disk group is rootdg (or root disk group). A disk
group name can be up to 31 characters long.
VM Disk
Physical Disk
disk01
vol01-01
disk01-01
disk01-02
vol01
disk01-01
disk01-02
Disk Group
VM Disk
disk02
vol02-01
disk02-01
vol02
disk02-01
Physical Disk
Volume
Volume
Plex
Plex
Subdisk
Subdisks
devname1
devname2