Diagnostic Network
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
- separate failure modes from Ethernet interfaces
CAN (Controller Area Network) diagnostic interconnect
- CAN connects directly to environmental monitoring sensors (temperature, fan RPM, ...)
- one brick per “shelf” of 8 acts as gateway from CAN to redundant switched Ethernet fabric