Common VMHA problems :
1)Misconfigured admission control
2)Lack of management network redendancy
VMHA agents monitor other hosts in the cluster with heartbeats sent on the management network
ESX it is vswif and ESXi it is vmk.After 15 secs if no heart is recived host is failed vms are failed over.
3)Misunderstood host roles (primary/secondary)
4)HA agent not loaded
VMHA Admission Control polices:
1)Amonut of host failures
2)Percentage reserved
3)Designated failover host (Reserving the Host for failure)
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