Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

Figure 1-2
SF Oracle RAC architecture
OCI Client
Node 1 Node 2
HAD
Databases
containing:
Datafiles
Redo
Log Files
Control
Files
Temp
Files
CFS
CVM
LLT
LMXGAB
Vxfen
VCSMM
CFS
CVM
LLT
LMX GAB
Vxfen
VCSMM
HAD
Cache
Fusion
traffic
Db
instance
Db
instance
Oracle
Clusterware/
Grid
Infrastructure
Oracle
Clusterware/
Grid
Infrastructure
SF Oracle RAC provides an environment that can tolerate failures with minimal
downtime and interruption to users. If a node fails as clients access the same
database on multiple nodes, clients attached to the failed node can reconnect to
a surviving node and resume access. Recovery after failure in the SF Oracle RAC
environment is far quicker than recovery for a single-instance database because
another Oracle instance is already up and running. The recovery process involves
applying outstanding redo log entries of the failed node from the surviving nodes.
Overview of Veritas Storage Foundation for Oracle RAC
How SF Oracle RAC works (high-level perspective)
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