I upgraded my main test ESXi host today from ESXi 4.1 to version 5. The process was pretty straight forward and I haven’t found any quirks yet. It took around 15 minutes in total including downloading the ISO and burning it.
Whats new in vSphere 5
You can download the ESXi 5 ISO below (login needed as usual), the version 5 free licenses aren’t showing yet so this update will put you into a 60 day evaluation mode.
Edit 26/08/11 – The VMware website is now showing ESXi 5 Licenses
Host running 4.1
Burn the ISO to CD, insert into the host and boot from CD-ROM, follow the on screen instructions
For most people upgrading the first option will be most suitable
Click here to learn how to upgrade VMware tools.