I am in the middle of patching some new host on a new vCenter environment. I have completed one so far by moving off production vms via vmotion, putting the host in maintenance mode, then pushing all the needed patches via update manager. It was successful.
My question is for the next host. The next host runs vCenter and vCenter DB and some other production systems. vCenter and DB live on local storage, so moving them isn't as easy as the other VMs that live on the SAN. What is the best way to patch this host? If the host has to go into maintenance mode for update manager to work, then vCenter will be down.