I have HP prolint DL380 gen 8 server with ESX 5.5. I am trying to upgrade ESX from 5.5 to 6 after the successful upgrade of VCSA. I found some article about patching using putty session and vib command to upgrade.
Is it better to do straight forward upgrade booting with CD or patching? Does upgrade of ESX removes the existing vswitch and vlans on vswitch?
Also, do I need to upgrade Async driver upgrade before or after ESX upgrade as mentioned in vmware kb -