All LocalController components send heartbeat information to the MultiControllers. If the active MultiController detects that it did not receive a heartbeat from the LocalController, it logs a missed heartbeat. If this time exceeds the timeout period, then the MultiController triggers a failover to the first available standby LocalController using the process described in the following diagram.
Failback is a manual process. To achieve failover, force a failure on the LocalController on Server 3.
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