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

The nlog attribute can be used to specify the number of log plexes to add. By
default, one log plex is added. The loglen attribute specifies the size of the log,
where each bit represents one region in the volume. For example, the size of the
log would need to be 20K for a 10GB volume with a region size of 64 kilobytes.
For example, to create a mirrored 10GB volume, vol02, with two log plexes in the
disk group, mydg, use the following command:
# vxassist -g mydg make vol02 10g layout=mirror logtype=drl \
nlog=2 nmirror=2
Sequential DRL limits the number of dirty regions for volumes that are written
to sequentially, such as database replay logs. To enable sequential DRL on a volume
that is created within a disk group with a version number between 70 and 100,
specify the logtype=drlseq attribute to the vxassist make command.
# vxassist [-g diskgroup] make volume length layout=layout \
logtype=drlseq [nlog=n] [other attributes]
It is also possible to enable the use of Persistent FastResync with this volume.
See “Creating a volume with a version 0 DCO volume” on page 290.
Note: Operations on traditional DRL log plexes are usually applicable to volumes
that are created in disk groups with a version number of less than 110. If you
enable DRL or sequential DRL on a volume that is created within a disk group
with a version number of 110 or greater, the DRL logs are usually created within
the plexes of a version 20 DCO volume.
See “Creating a volume with a version 20 DCO volume” on page 293.
Creating a striped volume
Note: You need a full license to use this feature.
A striped volume contains at least one plex that consists of two or more subdisks
located on two or more physical disks. A striped volume requires space to be
available on at least as many disks in the disk group as the number of columns in
the volume.
See “Striping (RAID-0)” on page 40.
To create a striped volume, use the following command:
Creating volumes
Creating a striped volume
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