http://technet.microsoft.com/en-us/library/gg563800.aspx
So.. what hard drive specs?
What virtualization platform?
What RAM?
So many questions. And for all of the answers a lot of folks with opinions. If you are thinking about the hardware you need to invest in to support SBS 2011, I’d recommend that you join the SBS2k@yahoogroups.com or the smbvirtualization@yahoogroups.com lists and ask for advice.
Some like Dell. Some like HP. But ask for opinions… it will help you decide.