Error when vMotion from ESXi 5.1 to 5.5 Update 3b
I was recently tasks with moving an ESXi cluster from ESXi 5.1 to ESXi 5.5.
I decided to move to the latest update release which was ESXi 5.5 Update 3b (build – 3248547). vCenter had already been upgraded to version 5.5. Your vCenter server version must not be lower than your ESXi hosts to be able to manage the hosts successfully. So you will need at least vCenter 5.5 Update 3b.
I started to put hosts into maintenance mode and perform an upgrade of ESXi via Update Manager. Several hosts were upgraded successfully with only a few remaining on ESXi 5.1. However I was not able to evacuate these hosts while keeping the VMs powered on as I was getting the below vMotion error.