Using Serviceguard Extension for RAC, 6th Edition, April 2008

Table 3-1 RAC Software, Archive, Datafiles, SRVM
RAC Datafiles, SRVMRAC Software, ArchiveConfiguration
CFSCFS1
Raw (SLVM or CVM)CFS2
CFSLocal FS3
Raw (SLVM or CVM)Local FS4
NOTE: Mixing files between CFS database files and raw volumes is allowable, but
not recommended. RAC datafiles on CFS requires Oracle Disk Manager (ODM).
Using Single CFS Home or Local Home
With a single CFS home, the software installs once and all the files are visible on all
nodes. Serviceguard cluster services needs to be up for the CFS home to be accessible.
For Oracle RAC, some files are still local (/etc/oratab, /var/opt/oracle/,
/usr/local/bin/).
With a local file system home, the software is installed and copied to every node’s local
file system. Serviceguard cluster services does not need to be up for the local file system
to be accessible. There would be multiple homes for Oracle.
Considerations on using CFS for RAC datafiles and Server Management Storage (SRVM)
Use the following list when considering to use CFS for database storage:
• Single file system view
— Simpler setup for archive recovery since archive area is visible by all nodes
• Oracle create database files
• Online changes (OMF - Oracle Managed Files) within CFS
• Better manageability
• Manual intervention when modifying volumes, DGs, disks
• Requires the SGeRAC and CFS software
CFS and SGeRAC is available in selected HP Serviceguard Storage Management
Suite bundles.
Refer to your verion of the HP Serviceguard Storage Management Suite Version Release
Notes.
Considerations on using Raw Volumes for RAC datafiles and Server Management storage (SRVM)
Use the following list when considering to use Raw Volumes for database storage:
• SLVM is part of SGeRAC.
• Create volumes for each datafile.
Planning Database Storage 95