Reliability
Also: mission reliability
Probability that a system performs its required function for a stated time under stated conditions.
Reliability needs a defined success event, population or model, duration, environment, and dependence assumptions.
- Units
- probability from 0 to 1
- Formula
R_series = ∏Rᵢ for independent required elements
Example Independent 0.99 elements in series yield 0.9801 reliability.
Common misconception Reliability is not the same as safety or availability.