Figure: Dependency chart of a typical RDC configuration using third-party replication depicts a dependency chart of a typical RDC configuration using third-party replication.

In this example, an application is configured as a VCS service group on a four-node cluster, with two nodes in the primary RDC system zone and two in the Secondary RDC system zone. In the event of a failure on the Primary node, VCS fails over the application to the second node in the Primary zone. When there is no system available for failover in the Primary system zone, VCS will failover the application to a system in the Secondary system zone.

The process involves the following steps: