VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Understanding VERITAS Volume Manager
Device Discovery
Chapter 1 15
See Figure 1-9, “Example of a Volume with One Plex,”.
Figure 1-9 Example of a Volume with One Plex
Volume vol01 has the following characteristics:
• It contains one plex named vol01-01.
• The plex contains one subdisk named disk01-01.
• The subdisk disk01-01 is allocated from VM disk disk01.
A volume with two or more data plexes is “mirrored” and contains mirror
images of the data. See Figure 1-10, “Example of a Volume with Two
Plexes,”
Figure 1-10 Example of a Volume with Two Plexes
Each plex contains an identical copy of the volume data. For more
information, see “Mirroring (RAID-1)” on page 24.
Volume vol06 has the following characteristics:
• It contains two plexes named vol06-01 and vol06-02
• Each plex contains one subdisk
• Each subdisk is allocated from a different VM disk (disk01 and
disk02)
Subdisk
Plex
vol01-01
vol01
Volume
disk01-01
vol06
disk02-01
vol06-02
disk01-01
vol06-01
Volume