What is the recommendation for installing DHCP failover; domain controllers or member servers?
I can't seem to find any recommendations either way. I did find an old question here pertaining to security suggesting DHCP should never be on a Domain Controller but that was for Sever 2003.
In this case I'm looking at Server 2012R2. I can either add the DHCP role to two domain controllers or fire up two new virtual member servers on our Hyper-V cluster.
This is an Intranet with 7 existing domain controllers running 2008R2 with approximately 300 hosts using DHCP (servers are static IPs on a seperate subnet). We will be adding 2 new DCs and a new Hyper-V cluster.
As Murisonic comments, there is no definitive answer to this, all I can say is that the DHCP role is supported on a DC. On the plus side less VM's less overhead, possible slight performance because DNS and DHCP are on the same servers. I can't really think of any downsides so I would go ahead. Also have a look at the IP address Management (IPAM) role for management and logging .. https://technet.microsoft.com/en-us/library/jj878343.aspx