Veritas 4.1 Installation Guide (HP-UX 11i v3, February 2007)

Join several subdisks:
# vxsd -g <diskgroup> join <subdisk1> <subdisk2> ... <new_subdisk>
See vxsd (1M), for more information on the supported options.
• Associating Subdisks
Associating a subdisk with a plex places the amount of disk space defined by the subdisk
at a specific offset within the plex. The entire area that the subdisk fills must not be occupied
by any portion of another subdisk.
You can associate subdisks to plexes in the following ways:
— Associating a Subdisk With a New Plex at the Time of Plex Creation
If you have already created all the subdisks needed for a particular plex, to associate
subdisks at plex creation, use the following command:
# vxmake -g <diskgroup> plex <plex> sd=<subdisk,...>
See vxmake (1M), for more information on the supported options.
— Associating a subdisk to an Existing Plex
You can associate subdisks to existing plexes in the following ways:
◦ Associate to a Simple Plex
Associate one or more subdisks with an existing plex:
# vxsd -g <diskgroup> assoc <plex> <subdisk1 [subdisk2 subdisk3 ...]>
See vxsd (1M), for more information on the supported options.
◦ Associate to a Sparse Plex
Associate a subdisk with a sparse plex:
# vxsd -g <diskgroup> -l <offset> assoc <sparse_plex> <exact_size_subdisk>
See vxsd (1M), for more information on the supported options.
◦ Associate to a Stripped or RAID-5 Plex
Specify a column number and column offset for the subdisk in a striped or RAID-5
plex:
# vxsd -g <diskgroup> -l <column_#/offset assoc plex subdisk ...>
See vxsd (1M), for more information on the supported options.
• Dissociating Subdisks
To disconnect a subdisk and the plex to which it belongs, the subdisk must be dissociated
from the plex. A subdisk is dissociated when the subdisk is removed or used by another
plex.
Dissociate a subdisk:
# vxsd -g <diskgroup> dis <subdisk>
See vxsd (1M), for more information on the supported options.
• Removing Subdisks
Remove a subdisk:
# vxedit -g <diskgroup> rm <subdisk>
See vxedit (1M), for more information on the supported options.
Plexes
Plexes are logical groupings of subdisks that create an area of disk space independent of the
physical disk size or other restrictions.
36 Setting up the Veritas 4.1 Products