Cluster Server 8.0 Agent for EMC SRDF/Star Configuration Guide - Windows

Workload and async target total site failure

In this scenario, the hosts and storage at both the workload site and the async target become unavailable. Under these conditions, you must use VCS to switch the application to the sync target site.

At this point, no replication link is available.

After both the workload site and sync target sites are available, you can regain Star protection by using VCS to switch the application back to the workload site or you can use the agent action entry points to transition Star to the PROTECTED state.