Upgrade Vcenter Appliance & update Server & Esxi 5.1 Hosts to 5.5

Yes, I need find out the best approach to upgrade our Vcenter Appliance & Updating
Server & also the ESXi 5.1 to version 5.5. Also just as a precautionary measure if i
clone my vcenter appliance and something happens during the upgrade can I just
revert back to my clone and start over without causing problems. Also should I upgrade
the esxi hosts from withing vcenter or from the cd at each host.
Jre19611Asked:
Who is Participating?
 
Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
If you CLONE/BACKUP you can roll back.

Some Administrators suggest Updating ESXi hosts using Update Manager connected to vCenter Server, is easier than using the CDROM ESXi installer.

It's a matter of personal preferences.

Please note many issues have been found when upgrading or using 5.5. Personally I would hold off and wait for the U1 release. Just search EE for issues!
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