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

disk data is set up by creating multiple data plexes for a single volume. Each data
plex in a mirrored volume contains an identical copy of the volume data. Because
each data plex must reside on different disks from the other plexes, the replication
provided by mirroring prevents data loss in the event of a single-point
disk-subsystem failure. Multiple data plexes also provide increased data integrity
and reliability.
See “About subdisks” on page 249.
See “Creating a volume” on page 277.
Note: Most VxVM commands require superuser or equivalent privileges.
Creating plexes
Use the vxmake command to create VxVM objects, such as plexes. When creating
a plex, identify the subdisks that are to be associated with it:
To create a plex from existing subdisks, use the following command:
# vxmake [-g diskgroup] plex plex sd=subdisk1[,subdisk2,...]
For example, to create a concatenated plex named vol01-02 from two existing
subdisks named mydg02-01 and mydg02-02 in the disk group, mydg, use the
following command:
# vxmake -g mydg plex vol01-02 sd=mydg02-01,mydg02-02
Creating a striped plex
To create a striped plex, you must specify additional attributes. For example, to
create a striped plex named pl-01 in the disk group, mydg, with a stripe width of
32 sectors and 2 columns, use the following command:
# vxmake -g mydg plex pl-01 layout=stripe stwidth=32 ncolumn=2 \
sd=mydg01-01,mydg02-01
To use a plex to build a volume, you must associate the plex with the volume.
See “Attaching and associating plexes” on page 265.
Creating and administering plexes
Creating plexes
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