Originally Posted by
Yabby
I've just setup VMware vSphere Update Manager, then put them in maintenance mode, remediate the host, it needs a restart, bring it back up. Nothing really different than a normal security update. I only update 3 of the hosts in my test secondary cluster (I have a few users that are always considered "testing" those users use a different VDI environment than my primary cluster). So with 3/10 hosts updated, i left it for a few days without issues, so if you wanted you can always test one host before updating the others if you want to play it safe.
Primary cluster has about 20 hosts and i did those all at the same time, it's really easy using the update manager.