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

IMPORTANT:
• Complex workloads can be configured in Continentalclusters with SADTA using physical
replication technology.
• Disaster Recovery (DR) rehearsal is not supported in SADTA with Continentalclusters.
• Continentalclusters maintenance mode feature for recovery groups is not supported in SADTA
with Continentalclusters.
Configuring a Complex Workload in Continentalclusters with SADTA
This section lists and describes the procedures for configuring a complex workload in
Continentalclusters with SADTA.
To configure a complex workload in Continentalclusters, complete the following procedure:
1. Setup the replication between the arrays in the primary cluster and the recovery cluster
2. Configure a primary cluster with a single site defined in the Serviceguard cluster configuration
file.
3. Configure a recovery cluster with a single site defined in the Serviceguard cluster configuration
file.
4. Setup the complex workload in the primary cluster.
5. Configure the Site Controller Package in the primary cluster.
6. Configure the Site Safety Latch dependencies in the primary cluster.
7. Suspend the replication to the recovery cluster.
8. Setup the redundant complex workload in the recovery cluster.
9. Configure the Site Controller Package in the recovery cluster.
10. Configure the Site Safety Latch dependencies in the recovery cluster.
11. Resume the replication to the recovery cluster.
12. Configure Continentalclusters.
13. Configure Continentalclusters recovery group with the Site Controller Package in the primary
cluster as a primary package and Site Controller package in the recovery cluster as a recovery
package.
Setting up Replication
When complex workloads are configured using SADTA, the data of the complex workload must
be replicated between the disk arrays at each cluster. The replication mechanism differs depending
on the type of array in your environment.
The following replication types are supported:
• Metrocluster with Continuous Access for P9000 and XP
• Metrocluster with Continuous Access EVA
• Metrocluster with EMC SRDF
For more information on configuring replication for the arrays in your environment, see the respective
chapters of this manual.
If you are configuring Oracle RAC as a complex workload, you can also use ASM storage for
storing RAC database. For configuring Oracle RAC database with ASM in Continentalclusters,
see the section “Configuring Oracle RAC Database with ASM in a Site Aware Disaster Tolerant
Architecture” (page 142).
Configuring the Primary Cluster with a Single Site
To configure complex workloads using SADTA in Continentalclusters, the primary cluster must be
created with a single site configured in the Serviceguard cluster configuration file.
Support for Complex Workloads in a Continentalclusters Environment using SADTA 127