Hi,
In this single physical machine,you need to install the RDVH on the physical machine,create VMs for DC,RDCB,RDWA,RDGW and vdi client machines.
Server 2012 Remote Desktop Services Overview:http://technet.microsoft.com/en-us/library/hh831447.aspx
regards,
Clarence
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.