VERITAS Volume Manager 3.1 Administrator's Guide

Volume Tasks
Splitting Subdisks
Chapter 6280
Splitting Subdisks
Splitting a subdisk divides an existing subdisk into two subdisks. To split
a subdisk, use the following command:
# vxsd –s size split subdisk_name newsd1 newsd2
where:
• subdisk_name is the name of the original subdisk
• newsd1 is the name of the first of the two subdisks to be created
• newsd2 is the name of the second subdisk to be created
The –s option is required to specify the size of the first of the two
subdisks to be created. The second subdisk occupies the remaining space
used by the original subdisk.
If the original subdisk is associated with a plex before the task, upon
completion of the split, both of the resulting subdisks are associated with
the same plex.
To split the original subdisk into more than two subdisks, repeat the
previous command as many times as necessary on the resulting
subdisks.