Best Practices for SGeRAC and Oracle RAC on HP-UX 11i, March 2009

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Note that if you use CFS for Oracle data files, the Oracle Disk Manager (ODM) library from
Symantec must be enabled to get near raw I/O performance.
When Oracle Clusterware home and/or Oracle database home is on CFS, a CFS file system full
problem may negatively impact Oracle Clusterware and/or Oracle database home on all nodes, e.g.
unable to log or dump. If this is a concern, another option is to place both Oracle Clusterware home
and Oracle database home on local file systems to localize the effect of file system full.
Figure 7. CFS configuration
Figure 7 shows a configuration with all storage on CFS. In a Serviceguard CFS environment, there is
an additional set of network traffic required by CFS/CVM (GAB/LLT) which uses both the primary
and standby paths. As part of the Serviceguard CFS system multi-node package configuration,
GAB/LLT is configured to run on the same set of interfaces as SG-HB, including both primary and
standby paths, concurrently.
Private
(primary)
Private
(standby)
SG
-
HB
CSS-HB
RAC-IC
GAB/LLT
Node A
Node B
SAN
switch
(primary)
SAN
switch
(standby)
CFS
(separate DGs for OC binaries, RAC binaries, OCR and Voting Disk,
data files, flash recovery and archive logs)
Storage links
Storage links
LAN 3
LAN 0
LAN 3
LAN 0
LAN 1
LAN 2
LAN 1
LAN 2
GAB/LLT