A Brief on “The Number of vSphere HA Heartbeat datastore for host warning”
During my Lab upgrade which went quiet smoothly and successfully, I came across this warning “The Number of vSphere HA Heartbeat datastore for host esx01.home.intra in cluster Prod in home is 0, which is less than required: 2” in the Tasks and events.
This must be a new feature “vSphere HA Heartbeat” of VSphere 5.0.
Let’s digin.
Prior this version, if we have a Host which is isolated from the cluster on its network management, HA will kick in and restart the VMs running on this host on a different ESX host and now with vSphere 5.0, a new feature has been added to the HA, vCenter will check the heartbeat on the Management network and also on the Vmkernal side. This Datastore Heartbeat feature should give a more accurate and determine if the given host has failed or this has just had a glitch somewhere.
Now once I’ve presented my storage to these two ESXi hosts, this warning disappeared and both ESXi have chosen the presented LUNs for storage heartbeating. How cool is this?
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