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

Volume Tasks
VxVM Volumes
Chapter 4 107
— Concatenated Pro Volume
A concatenated pro volume is a layered volume that concatenates
several underlying mirror volumes.
— Striped Pro Volume
A striped pro volume is a layered volume that stripes several
underlying mirror volumes.
The following table summarizes the advantages and disadvantages of
each volume layout.
Table 4-1 Layout Comparison
Layout Advantages Disadvantages
Concatenated • The volume can
consist of disk
regions that are not
adjacent.
• The volume can
span multiple
disks. A spanned
volume can have a
greater capacity
than a single disk.
• The volume can be
mirrored to protect
data against disk
failure and reduce
the risk of data loss.
• There is a risk of
data loss if the
volume is not
mirrored.
• Spanning a volume
across multiple disks
increases the chance
that a disk failure
will result in the
failure of the volume.
• Concatenation does
not improve I/O
performance.