I have migration SBS 2003 to 2012 R2 Essentials, transferred FSMO roles to the new server and am now adding computers to the new server. I have not yet removed AD from the old server. My question is DHCP server is not installed on the new server, only the old. At that point do I install DHCP Server on the new server or is this done somewhere along the way that I missed? I just can't remember the process from my last migration.