There is no threads or topic, but that setup does not use much power what is general idea of hdd mining/renting, it is good specially with storj where you do not need plot anything and can start from empty disk, with burst you would need plot on pc then after that just connect to raspberry. Raspberry use less power than pc, that is why is efficient to run it 24h/day. Still if you have gpu mining rigs you can just run that from rigs because they will run 24h/day anyway...