Managing Serviceguard Eighteenth Edition, September 2010

Physical Volume Name: ______________/dev/dsk/c4t2d0________________________

Physical Volume Name: ______________/dev/dsk/c5t2d0________________________

Physical Volume Name: ______________/dev/dsk/c6t2d0________________________

Physical Volume Name: _____________________________________________________

CVM and VxVM Planning

You can create storage groups using the HP-UX Logical Volume Manager (LVM,

described in the previous section), or using Veritas VxVM and CVM software.

NOTE: Check the Serviceguard/SGeRAC/SMS/Serviceguard Manager Plug-in Compatibility

and Feature Matrix and the latest Release Notes for your version of Serviceguard for

up-to-date information on CVM support: www.hp.com/go/

hpux-serviceguard-docs.

When designing a storage configuration using CVM or VxVM disk groups, consider

the following:

• CVM disk groups are created after the cluster is configured, whereas VxVM disk

groups may be created before cluster configuration if desired.

• High availability applications, services, and data should be placed in separate disk

groups from non-high availability applications, services, and data.

• You must not group two different high availability applications, services, or data,

whose control needs to be transferred independently, onto the same disk group.

• Your HP-UX root disk can belong to an LVM or VxVM volume group that is not

shared among cluster nodes.

• A cluster lock disk must be configured into an LVM volume group; you cannot

use a VxVM or CVM disk group. (See “Cluster Lock Planning” (page 129) for

information about cluster lock options.)

• VxVM disk group names should not be entered into the cluster configuration file.

These names are not inserted into the cluster configuration file by cmquerycl.

CVM and VxVM Worksheet

You may find a worksheet such as the following useful to help you organize and record

your specific physical disk configuration. This worksheet is an example; blank

worksheets are in Appendix E (page 463).

134 Planning and Documenting an HA Cluster