This wrench is sitting near the NSTX device. If it was there while the device was running, it would go flying across the room because of the magnetic fields that are generated to help balls of plasma float in mid-air.
Henderson points to the RAM cards in an old Datel server that block airflow coming from the fans (to the left) to the CPUs (on the right). Henderson said this hindrance caused frequent server shutdowns.
A side-by-side look at the older Datel server (left) with the new Sun Fire x2100 (right). Henderson said that changing these servers, along with other data center design improvements, helped cut the failure rate on jobs from 50 percent to less than 1 percent.