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

35Understanding Veritas Volume Manager
Volume layouts in VxVM
Figure 1-13 Example of spanning
Caution: Spanning a plex across multiple disks increases the chance that a disk failure
results in failure of the assigned volume. Use mirroring or RAID-5 (both described later)
to reduce the risk that a single disk failure results in a volume failure.
See “Creating a volume on any disk” on page 235 for information on how to create a
concatenated volume that may span several disks.
Striping (RAID-0)
Note: You need a full license to use this feature.
n n+1 n+2 n+3
disk01
disk01-01
VM disks
Physical disks
Plex with
Data blocks
devname1
disk01-01 disk02-01
disk02
devname2
disk02-01
Subdisks
n+3
disk02-02
disk02-01
disk01-01
Data in
disk01-01
Data in
disk02-01
nn+1 n+2
concatenated subdisks