Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

recovery cluster upon a primary cluster failure. Figure 22 shows a recovery using an Oracle RAC
configuration after failover.
Oracle RAC instances are only supported in the Continentalclusters environment for physical
replication set up using HP StorageWorks Continuous Access P9000 or XP, HP StorageWorks
Continuous Access EVA or EMC Symmetrix Remote Data Facility (SRDF) using SLVM or Cluster
Volume Manager (CVM) or Cluster File System (CFS) or Automatic Storage Management (ASM)
for volume management. In Continentalclusters, the Oracle RAC with ASM can be configured using
the Site Aware Disaster Tolerant Architecture (SADTA). For more information, see “Configuring
Oracle RAC Database with ASM in a Site Aware Disaster Tolerant Architecture” (page 142).
Continentalclusters Oracle RAC support is available for a cluster environment configured with only
Serviceguard and SGeRAC (for example, an environment running with Oracle RAC 9i, 10g or
11g).
Starting with Continentalclusters version A.05.01, recovery of an Oracle RAC instance in a cluster
environment running Serviceguard and Oracle Clusterware is supported. There is a special
configuration required for the environment running both Oracle Clusterware and
Serviceguard/Serviceguard Extension for RAC (SGeRAC) for the Continentalclusters RAC instance
recovery protection.
For more information, see Section (page 114).
Figure 22 Sample Oracle RAC Instances in a Continentalclusters Environment After Failover
The Oracle RAC workloads can also be deployed in Continentalclusters using Site Aware Disaster
Tolerant Architecture (SADTA). For more information on using SADTA for deploying Oracle RAC
Workloads in Continentalclusters, see “Support for Complex Workloads in a Continentalclusters
Environment using SADTA” (page 125). The Three data center solution (3DC Solution) using P9000
or XP Continuous Access 3DC replication technology uses Continentalclusters SADTA support to
deploy Oracle RAC workloads. For more information, see “Deploying Oracle RAC in a 3DC
Solution using SADTA” (page 449).
Configuring the Environment for Continentalclusters to Support Oracle RAC
In order to enable Continentalclusters support for Oracle RAC, there needs to be a set of
configurations, which include either Continuous Access P9000 or XP, or Continuous Access EVA,
or EMC SRDF, Oracle RAC, and Continentalclusters.
114 Designing Continentalclusters