I have a question around what happens to VM Servers running on a host when the host itself gets removed from a vCenter Cluster. I currently have 3 hosts in a cluster in which vMotion is broken due to EVC (Hosts are different Generation HP Proliant Servers) being turned off. I plan to both Upgrade the RAM among all the Servers currently attached to the Cluster and then migrate the VM's from the current ESXi host to a newer Host which I would like to add to the Cluster.
Without getting too detailed with the plan, I can say that at some point I would like to Remove one of the older Hosts from the Cluster but I'm basing this on the assumption that while the Host is removed from the cluster and unlicensed, it will continue to run the VM's although I won't have the ability to use any vCenter features like cloning, templates, etc which would not be necessary. Once I am done doing what Maintenance work I need to do I would reattach the Server to the Cluster. The idea here is no downtime. Could someone tell me if this is feasible?
Thanks in advance!