

Explain how vSphere HA interprets heartbeats To get back to the defaults: remove fdm.cfg file on each hosts in the cluster OR reset the values to defaults on each host in the cluster. Click OK and wait for the cluster to reconfigure. Wait for HA to unconfigure, click Edit and check Turn ON vSphere HA. As you are probably aware, this part may take some time depending on how many VMs you have on your host.

It then places the host into Maintenance Mode.

Once I select the host I want to patch, it initiates a VUM Scan on the host, to make sure it brings the host to the most current level.After you have your VMs full list or just one by one, you can do the above commands to register the VM in the new ESXi host. We will also get the column name VMS.CONFIGFILENAME that shows in witch Datastore the VM is allocated. Note: If you are not sure of your ESXi host DNS Name do a nslookup with the IP Address to get the ESXi Host Full DNS Name.
