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

Creating a disk group
You must associate a disk group with at least one disk. You can create a new disk
group when you select Add or initialize one or more disks from the main
menu of the vxdiskadm command to add disks to VxVM control. The disks to be
added to a disk group must not belong to an existing disk group.
You can also use the vxdiskadd command to create a new disk group:
# vxdiskadd c1t0d0
where c1t0d0 is the device name of a disk that is not currently assigned to a disk
group. The command dialog is similar to that described for the vxdiskadm
command.
See “Adding a disk to VxVM” on page 107.
You can also create disk groups using following the vxdg init command:
# vxdg init diskgroup [cds=on|off] diskname=devicename
For example, to create a disk group named mktdg on device c1t0d0, enter the
following:
# vxdg init mktdg mktdg01=c1t0d0
The disk that is specified by the device name, c1t0d0, must have been previously
initialized with vxdiskadd or vxdiskadm. The disk must not currently belong to
a disk group.
You can use the cds attribute with the vxdg init command to specify whether a
new disk group is compatible with the Cross-platform Data Sharing (CDS) feature.
In Veritas Volume Manager 4.0 and later releases, newly created disk groups are
compatible with CDS by default (equivalent to specifying cds=on). If you want to
change this behavior, edit the file /etc/default/vxdg and set the attribute-value
pair cds=off in this file before creating a new disk group.
You can also use the following command to set this attribute for a disk group:
# vxdg -g diskgroup set cds=on|off
Adding a disk to a disk group
To add a disk to an existing disk group, select Add or initialize one or more
disks from the main menu of the vxdiskadm command.
Creating and administering disk groups
Creating a disk group
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