Managing Serviceguard Nineteenth Edition, Reprinted June 2011

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: http://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 94) 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 355).

=========================================================================

Disk Group Name: ______dg01_____________________

Disk Name: _____________________c1t2d0__________________________

Disk Name: _____________________c2t2d0__________________________

Disk Name: _____________________c3t2d0__________________________

Disk Name: _____________________________________________________

CFS DG Package Name: ___________SG-CFS-DG_1_____

CFS Volume, MP, and MP Pkg: _logdata_/mnt/lvol1_ SG-CFS-MP_1______

CFS Volume, MP, and MP Pkg: ______________________________________

Disk Group Name: ______dg02______________________

Disk Name: _____________________c1t3d0__________________________

Disk Name: _____________________c2t3d0__________________________

Disk Name: _____________________c3t3d0__________________________

CFS DG Package Name: ___________SG-CFS-DG_2_____

CFS Volume, MP, and MP Pkg: _hrdata__/mnt/lvol4_ SG-CFS-MP_2____

CFS Volume, MP, and MP Pkg: ____________________________________

98 Planning and Documenting an HA Cluster