Structural Reliability lectures by B. Bhattacharya
13 minutes
Standby Redundancy and Switchover Reliability
A standby unit that is not powered does not accumulate operating stress, so standby redundancy can beat active redundancy — but only if the detection-and-switch mechanism works, and that mechanism is itself a series element. This node is where learners discover that the switch is usually the weakest block in the diagram.