---
title: MTBF/MTTR
updated: 2022-01-13 09:07:46Z
created: 2022-01-13 02:53:06Z
---

# MTBF
Mean Time Between failures,
if 
$$f(t)={\lambda}e^{-\lambda t}$$
then
$$MTBF=\int_0^{\infty}R(t)dt=\int_0^{\infty}tf(t)dt={1 \over \lambda}$$



# MTTR
Mean Time To Reapair/Recovery/Restore,