virtualbox.org

Bit of an odd question perhaps, but is it possible to restrict the number of concurrent running VM's? I'd like to find a way to only allow one VM to be un at any one time, but to allow there to be several sat on the machine inactive.

Giving each VM about half the available host RAM should do it.

mpack wrote:Giving each VM about half the available host RAM should do it.

I had contemplated that, but pretty easy for the end user to change that.

Is the UI required, i.e. if I deleted "VirtualBox.exe" off the machine and wrote a small app to launch given VM's in headless mode, I could prevent more than one being "easily" run at the same time.

No, the GUI manager is not needed to run VMs. See the "VBoxManage" chapter in the user manual. Also check out the "create shortcut" feature (right click on a listed VM to see this), which also reveals another way to run VMs without opening the manager.

mpack wrote:No, the GUI manager is not needed to run VMs. See the "VBoxManage" chapter in the user manual. Also check out the "create shortcut" feature (right click on a listed VM to see this), which also reveals another way to run VMs without opening the manager.

App written that uses VBoxManage, that was easy enough. Many thanks.