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

See “Dirty region logging” on page 60.
These logs are supported either as DRL log plexes, or as part of a version 20
DCO volume. Refer to the following sections for information on creating a
volume on which DRL is enabled:
See “Creating a volume with dirty region logging enabled” on page 293.
See “Creating a volume with a version 20 DCO volume” on page 293.
■ RAID-5 logs are used to prevent corruption of data during recovery of RAID-5
volumes.
See “RAID-5 logging” on page 52.
These logs are configured as plexes on disks other than those that are used
for the columns of the RAID-5 volume.
See “Creating a RAID-5 volume” on page 297.
Creating a volume
You can create volumes using an advanced approach, an assisted approach, or
the rule-based storage allocation approach that is provided by the Intelligent
Storage Provisioning (ISP) feature. Each method uses different tools. You may
switch between the advanced and the assisted approaches at will.
Note: Most VxVM commands require superuser or equivalent privileges.
Advanced approach
The advanced approach consists of a number of commands that typically require
you to specify detailed input. These commands use a “building block” approach
that requires you to have a detailed knowledge of the underlying structure and
components to manually perform the commands necessary to accomplish a certain
task. Advanced operations are performed using several different VxVM commands.
To create a volume using the advanced approach, perform the following steps in
the order specified:
■ Create subdisks using vxmake sd.
See “Creating subdisks” on page 250.
■ Create plexes using vxmake plex, and associate subdisks with them.
See “Creating plexes” on page 260.
See “Associating subdisks with plexes” on page 253.
See “Creating a volume using vxmake” on page 300.
■ Associate plexes with the volume using vxmake vol.
277Creating volumes
Creating a volume