I installed WHS 2011 on the new server 'pcupgrade' built for me two weeks ago. They had a nightmare installing it on an Asus Sabertooth Z77, but stuck with it until they got it right. Now, not wanting to mess up my treasured Workgroup setup, I decided to use PowerShell to change from 'HomeGroup', which of course lost me the automatic backup features, plus, no other machine in the WorkGroup can download the Connectore from the server. I'm not really unhappy about losing the atu-backup, as I've managed to open up all the Server 2008 R2 features that I was looking for anyway. What I am delighted about is a little device I found that allows 'Restore Points'!
Last but not least, ESET NOD32 installs & works perfectly with the kit!