Split-brain is a condition in which both node devices have assumed the role of the active node.

One common scenario in which split-brain occurs is when the active and standby nodes experience network interruption during a failover. At the moment of network interruption, the standby node has assumed the active node role, but the original active node has not yet assumed the standby node role. After the network is restored, the system detects split-brain.

Automatic and manual methods of split-brain recovery are available.