So you’ve upgraded your ESX 3.x servers to 4.0 and you’ve upgraded your vCenter server, now you want to access the shiny new hot-add feature to upgrade some running server’s memory. Except you can’t, the feature is no-where to be seen. Something to bear in mind though, your OS needs to support hot-add, so you’ll need a Windows Enterprise or Datacenter edition.
Here’s how to enable it:
Upgrade the VM’s tools, if you haven’t already. This requires a re-boot, but don’t reboot, shut the server down down, otherwise you’ll require another reboot to add the feature. The tools can be upgraded from the system tray icon.
Written by Sam McGeown
on 16/2/2010