PPT Slide
Each node includes extra diagnostic support
- diagnostic processor: independent hardware running monitoring and control software
- monitors hardware and environmental state not normally visible to system software
- control
- reboot/power-cycle main CPU
- inject simulated faults: power, bus transients, memory errors, network interface failure, ...
- separate “diagnostic network” connects the diagnostic processors of each brick
- provides independent network path to diagnostic CPU
- works when brick CPU is powered off or has failed