Nowadays, operating 4D Server from a virtual machine is a popular option. Virtual machines offer benefits such as hardware and memory flexibility. However, you should not expect performance to be as good as physical hardware. If you are running a virtual 4D server, clients may run into slow downs that would usually not occur in a regular 4D server, especially if other applications are running alongside 4D Server on the virtual machine. It is good to be aware of these tradeoffs when deciding to implement a 4D server on physical vs. virtual machines.