With Server 2008 R2, 2012 and 2012 R2, the HyperV deployment allows you to deploy a Parent and then install two copies of the server as children/guests.
One of the ways you can deal with the sticker shock of server deployment in this era is to purchase the server operating system via volume license with payments spread out over three years. Volume licensing also gives you downgrade rights as well as making it easier to track product key codes.
if you downgrade one of the instances of the server to Essentials and/or deploy the Essentials role in one of the servers remember that you also need RDS cals in order to use the Remote Web Access.
In this new era of post small business server you will need the following:
Windows Server 2012 standard – set up as a HyperV server with two guests. One will host the Domain controller, the other the Exchange Server. If you need a third server for a line of business server or to host SharePoint, you’ll need another license.
RDS cals – for remote web access use
The sticker shock to what your client was used to paying will be great. Prepare your client and as I said earlier, consider 3 year payment option.
I do not install antivirus on the HyperV host, nor do I on servers. What you say? Yes you heard me. Threats come into the server from the locations where users have access. So I use Exchange defender as Exchange hygiene in order to prevent spam and viruses from entering the network. Antivirus is installed on all workstations and terminal servers (like Multipoint). If you DO install antivirus on servers ensure you place ALL exclusions as recommended.
Also follow any line of business application recommendation for exclusions as well. Bottom line if you deploy antivirus, make sure it’s set up correctly or don’t do it at all. Incorrectly set up antivirus does more harm than good.