I need to upgrade from ESXi 4.1 to ESXi 5.5 and was wondering if there are any good articles with the steps needed to do the upgrade??
This would show how to upgrade the esxi host and the virtual center. I think what I need to do is to migrate 1 host at a time, meaning move off the vms from it and then just install ESXi 5.5 onto it. I have 4 host so do I do the first 1 and then upgrade the virtuak center then upgrade the other host?
I know also that once upgrade I have to upgrade the hardware and vmware tools on all of the vms correct?