Hyper-V role migration involves moving the virtual machines, virtual networks, and all the associated settings from one physical computer to another physical computer in the enterprise. The process supports moving from a server running Hyper-V in Windows Server 2012 to a server running Hyper-V in Windows Server 2012 R2. The Hyper-V role does not depend on any other roles.
This step-by-step guide contains an introduction to using DHCP with a split scope on a secondary server, with delay, and instructions for setting up a test lab using two DHCP servers and one DHCP client. Requirements of DHCP Scope Splitting.