Hardware techniques (2)
Heavily instrumented hardware
- sensors for temp, vibration, humidity, power, intrusion
- helps detect environmental problems before they can affect system integrity
Independent diagnostic processor on each node
- provides remote control of power, remote console access to the node, selection of node boot code
- collects, stores, processes environmental data for abnormalities
- non-volatile “flight recorder” functionality
- all diagnostic processors connected via independent diagnostic network