Back from holiday, just an update. The link provided earlier didn't work when I tried it. When I contacted Dell support, the guy in India could download it, but I couldn't - he said sometimes there are issues with connectivity depending on where in the world you are. Anyway the tech support guy managed to email me a download link to Vmware Esxi 5.1, I simply attached the ISO and choose an upgrade :-) Thanks for the help.
Hi  I've downloaded Vmware's customized installer for Vmware Esxi 5.0 on the R720, from the website:[URL] I now want to update the Vmware version, but am not sure on the best way to go about this. I'm using a single host and do not have VUM. I was thinking of using this easy to follow guide:   [URL] However, I'd like to know what the folks at Dell say on the matter :-)   Thanks      
Updating Vmware Esxi 5.0 on a PowerEdge R720