I have a 25 client network with 2 hyper-v host servers running 2012r2. Each has 2 virtual machines, including a virtual domain controller on each host. For the other vm on each host, the newer host has an application server which is replicating to the 7 year old host server. Backup from the new host to 2 DAS and 2 NAS at night also, and all is working well.
I would like to have a physical domain controller on the network because that was advised in my research when I upgraded the network with a new server.
All clients are win 8.1 pro
Is there a high benefit/cost ratio for adding a physical domain controller to the network, and could I get away with using Server 2003 or what would be your advice?