Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Subdisk can also be moved manually after hot-relocation.
See “Moving relocated subdisks” on page 443.
Splitting subdisks
Splitting a subdisk divides an existing subdisk into two separate subdisks. To split
a subdisk, use the following command:
# vxsd [-g diskgroup] -s size split subdisk newsd1 newsd2
where subdisk is the name of the original subdisk, newsd1 is the name of the first
of the two subdisks to be created and 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.
For example, to split subdisk mydg03-02, with size 2000 megabytes into subdisks
mydg03-02, mydg03-03, mydg03-04 and mydg03-05, each with size 500 megabytes,
all in the disk group, mydg, use the following commands:
# vxsd -g mydg -s 1000m split mydg03-02 mydg03-02 mydg03-04
# vxsd -g mydg -s 500m split mydg03-02 mydg03-02 mydg03-03
# vxsd -g mydg -s 500m split mydg03-04 mydg03-04 mydg03-05
Joining subdisks
Joining subdisks combines two or more existing subdisks into one subdisk. To join
subdisks, the subdisks must be contiguous on the same disk. If the selected subdisks
are associated, they must be associated with the same plex, and be contiguous in
that plex. To join several subdisks, use the following command:
# vxsd [-g diskgroup] join subdisk1 subdisk2 ... new_subdisk
For example, to join the contiguous subdisks mydg03-02, mydg03-03, mydg03-04
and mydg03-05 as subdisk mydg03-02 in the disk group, mydg, use the following
command:
Creating and administering subdisks
Splitting subdisks
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