Managing Serviceguard Sixteenth Edition, March 2009

• 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 (starting
from VxVM 3.5) 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 131) 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 419). Make as many copies as you need. Fill out
the worksheet and keep it for future reference.
This worksheet includes volume groups and physical volumes. If you are using the
cluster file system, begin planning your multi-node packages here.
=========================================================================
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: ____________________________________
136 Planning and Documenting an HA Cluster