The VAXstation itself doesn't take much power and therefore doesn't generate too much heat. The power supply moves a small amount of air by virtue of its fans,

The VAXstation itself doesn't take much power and therefore doesn't generate too much heat. The power supply moves a small amount of air by virtue of its fans, but not much. It was tested and runs fine in a room at ambient temperature (72º), fully closed, with no external airflow. Because of this, it should never have issues where it's colocated because the datacenter has positive pressure cooling.