In a two-node cluster, epsilon, the value that indicates a node as the master and a requirement in clusters with more than two nodes, is
not held by either node. Instead, both nodes are continuously polled to ensure that if takeover occurs,the node that is still up and running has full read-write access to data as well as access to logical interfaces and management functions. This continuous polling function is referred to as cluster high
availability or cluster HA.
Continuously polled who can be explained in more detail
I understand that the HA configuration, each node has its own status information in real time is written to the mailbox disk, partner node continues to check whether the mailbox disk information updated mailbox disks of a node is not updated when a certain period of time,that this node has failed, right?
If so, how long is not updated, you will think that this node failure?