Most of my equipment has physical interfaces, video and audio in and out Some equipment is very latency sensitive -- I'm talking microseconds, not milliseconds

Most of my equipment has physical interfaces, video and audio in and out Some equipment is very latency sensitive -- I'm talking microseconds, not milliseconds. More generic tasks need easy access to that specialist equipment (much of which doesn't quite grasp the concept of security) Given that we therefore have to run a secure network across hundreds of sites on multiple continents, adding a couple of machines running xen adds very little to the overhead.