When the Processor power fails - the 128 DUMB Terminals
are also dead. I use one Processor to serve all 128 Terminals. That brings up the question - are they all on the same power distribution network? Solution - use a power back-up system depending on the System Application.
The system also receives a "Power ON Reset". This is excellent as far as the FPGA I am using - this resets all of
the FF's in the device.
I also use a centralized Hard Disk(s) File - one for the entire system. The Peripheral Processor monitors Disk useage
to flag when to add an additional Drive.
I hope this answers your question satisfactorily. If not -
do it again.