virtualbox.org

We've been running an (interesting?) setup where a Windows Server has been running the VirtualBox controller, with the VM's themselves sit on Synology NAS boxes.

What I want to get a better idea of is this, do I really need the controller to run off a server?

Could I get away with a possibly cheaper option of a beefy workstation/PC?

Ideas? Thoughts? Praise? Reproof?

Nothing special is required of the PC except spare resources (CPU, RAM, disk space) that can be assigned to a VM.