vSphere HA VM Monitoring - Back to Basics - VMware vSphere Blog
VMware Tools and Open-VM tools: the Difference | StarWind Blog
vSphere HA VM Monitoring - Back to Basics - VMware vSphere Blog
Virtual Machine Reset By HA-VMware Tools Heartbeat failure
VMware vCenter HeartBeat | Blog Bujarra.com
Issues with vmmonitoring in HA clusters while using vsphere client 5.0.0 build 455964, vm monitoring with vmware tools down will not restart failed vm - Grzegorz Kulikowski