I need to update the controller firmware on my three hosts. The only production server VM that we currently have has a very small maintenance window. If I shut down all VMs on one host can I then shut it down/upgrade the firmware on that host without causing problems with the rest of the vCenter environment? If I am able to do that I have another question. Once the hosts are updated that aren’t hosting the production server could I move the production server VM to one of the updated hosts until that host is updated then move it back?
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