Use the VI Client to bulk upgrade VM tools
The last steps of the VI3 upgrade process involve the virtual machines. Upgrading the VM hardware and the installed VM tools complete the virtual infrastructure migration, but can be a daunting task if you have numerous ESX hosts and guests. Fortunately, there are a couple of ways you can simultaneously update multiple VMs. One method uses the VI client and the other involves entering a console command on the VirtualCenter server.
