Dassault people want to discuss the levels of system redundancy forever, because, well, there is so much to say. They worry that pilots and passengers are concerned that the DFCS is new, and totally automated, so they need to explain all the steps taken to ensure there will always be electrical and hydraulic power for the multiple levels of computers that are DFCS. Let me summarize. There are three engine-driven generators, two permanent magnet alternators, a wind-driven ram air turbine generator (RAT) and finally two batteries, any one of which can power the DFCS. There are three main hydraulic systems powered by five engine-driven pumps, one standby pump and bootstrap type reservoirs. You only need one to get back to the airport.