I have a Dell Server with Windows Server 2012 R2 Essentials server for a small business (4 users). I installed and configured the operating system on the physical host as the Active Directory server and connected all the clients to it. Everything was going just fine until I tried to install SQL Server Express 2014 at which point I received a warning message that I should not install SQL Server Express 2014 on a domain controller.
My next step was to enable the Hyper-V role on the server and create a virtual machine with the Windows Server 2012 R2 Essentials OS. However, when I log in to the VM it wants me to configure the OS all over again. That makes sense to me but what I can't figure out is how to configure the guest VM to join the domain rather than be it's own AD server.
Does anybody have any experience with this type of setup or have a recommendation for a different setup without involving additional machines or operating systems?