Don't have Telegram yet? Try it now!
https://blog.ragasys.es/troubleshooting-the-number-of-vsphere-ha-heartbeat-datastore-for-host-is-0-o-1-which-is-less-than-required-2
Troubleshooting: The number of vSphere HA heartbeat datastore for host is “0 ó 1”, which is less than required : 2