Hyper-v / and DC

I'm pretty sure I had the Hyper-v role installed on my server.

Last night I installed the Active Directory Services role. On reboot, neither role is installed.

My intention is to use the server for virtual environments;  to help with application development on different server environments.

What is the recommended setup?

Install a VM and run the DC role on the VM server and leave the hyper-v role on the host server (or vice-versa)

Thanks