Mr. VCDX007 Duncan Epping’s High Availability “Deepdive” page is definitely worth a read A VMware HA Cluster consists of nodes, primary and secondary nodes. Primary nodes hold cluster settings and all “node states” which are synced between primaries. Secondary nodes send their state info(resource occupation) to the primary nodes   Nodes send a heartbeat to each other, which is the mechanism to detect possible outages. Primary nodes send heartbeats to primary nodes only. … [Read more...]