VERITAS Volume Manager 3.1 Storage Administrator Administrator's Guide

Volume Tasks
Splitting a Subdisk
Chapter 4192
click OK.
Notes:
This task requires a subdisk name and the number of subdisks that
will result from the split.
The name of the first subdisk remains the same as the selected
subdisk. Other subdisks are automatically named by the Volume
Manager.
The new, smaller subdisks occupy the same regions of the disk that
the original subdisk occupied.
The original subdisk must contain a sufficient number of sectors for
the specified split to work.
A Dirty Region Logging log subdisk cannot be split.