user manual

37Understanding 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 243 for information on how to
create a concatenated volume that may span several disks.
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