Failover
Failover occurs when a server in a cluster automatically switches over to one or more backup servers in the event of a system failure.- Switchover
Switchover happens when you manually switch access to a resource from one server to another. - Rejoin
Rejoin means to become an active member of a cluster after having been a nonparticipating member. - Merge
A merge operation is similar to a rejoin operation except that it occurs when nodes that are partitioned begin communicating again. - Replication
Replication makes a copy of something in real time. It means copying objects from one node in a cluster to one or more other nodes in the cluster. - Heartbeat monitoring
Heartbeat monitoring is a cluster resource services function that ensures that each node is active by sending a signal from every node in the cluster to every other node in the cluster to convey that they are still active. - Reliable message function
The reliable message function of cluster resource services keeps track of each node in a cluster and ensures that all nodes have consistent information about the state of cluster resources. - Change cluster resource services settings
The default values affecting message timeout and retry are set to account for most typical installations. However, it is possible to change these values to more closely match your communications environment. - Cluster partition
A cluster partition is a subset of the active cluster nodes that results from a communications failure. Members of a partition maintain connectivity with each other.
Parent topic: Cluster concepts