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| About the type of failure | ||
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If a disaster disables all processing power in your primary data center, heartbeats from the failover site to the primary data center fail. VCS sends an alert signalling cluster failure. If you choose to take action on this failure, VCS prompts you to declare the type of failure.
You can choose one of the following options to declare the failure:
Disaster, implying permanent loss of the primary data center
Outage, implying the primary may return to its current form in some time
Disconnect, implying a split-brain condition; both clusters are up, but the link between them is broken
Replica, implying that data on the takeover target has been made consistent from a backup source and that the RVGPrimary can initiate a takeover when the service group is brought online. This option applies to Volume Replicator environments only.
You can select the groups to be failed over to the local cluster, in which case VCS brings the selected groups online on a node based on the group's FailOverPolicy attribute. It also marks the groups as being OFFLINE in the other cluster. If you do not select any service groups to fail over, VCS takes no action except implicitly marking the service groups as offline in the failed cluster.