===== Mean Time To Failure (MTTF) =====
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**Mean Time To Failure (MTTF)** is the length of time a device or other product is expected to last in operation. MTTF is one of many ways to evaluate the reliability of pieces of hardware or other technology. 

Source: [[https://en.wikipedia.org/wiki/Mean_time_between_failures | Mean Time To Failure (MTTF) ]]