Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP A.11.00

Figure 42 Package view for SADTA configuration in a 3DC solution
In the 3DC Solution, a complex workload is configured redundantly by configuring it at all sites.
A separate set of packages is used to configure complex workloads at each site. A Site Controller
Package is created in both, the primary cluster (Metrocluster between Site1 and Site2) and the
recovery cluster (Serviceguard cluster at Site3) to manage the complex workload. A recovery group
is configured in Continentalclusters with the Site Controller Package in the primary cluster as a
primary package and the Site Controller Package in the recovery cluster as a recovery package.
Starting the Site Controller Package at a site implies starting the complex workload packages that
are associated with it.
In normal circumstances, when the primary cluster is available, the Site Controller Package
configured in the primary cluster is running and the Site Controller Package configured in the
recovery cluster is halted. In the event of a catastrophic failure in the primary cluster, the complex
workload can be recovered using the cmrecovercl command to start the complex workload
configuration at the recovery cluster. This command starts the Site Controller Package at the recovery
cluster which in turn starts the complex workload in the recovery cluster as shown in Figure 43.
Deploying a Complex Workload in Three Data Center Solution using SADTA 127