Imagine a vSphere 5 cluster made up by ESXI 5.0.0.x hosts.
Update manager is configured and downloads updates every hour.
Servers were never updated.
- What is advisable to do before staring update for the first time, in order to prevent possible problems?
- In order to update the ESXi hosts, is it possible to update only one host each time and wait to see if everything is ok?
- In that case, cluster members would run different versions of ESXi for some time: can it be a problem?
- How much time the update is expected to take to update a generic ESXi host? I realize the answer cannot be provided unless specifying the HW configuration, but will it take minutes, hours or days?
- Is there any other suggestion to prevent possible troubles?
Regards
marius