#MTBF (Mean Time Between Failure)

MTBF (Mean Time Between Failure)

#MTBF (Mean Time Between Failure) is a measure of how long a system or product is expected to operate before it fails and is used to plan for maintenance or replacement.
#MTTR (Mean Time To Repair) measures how long it takes to repair a system or product after it fails, and it is used to minimize #downtime and reduce #repair costs.

Note: MTBF does not consider the period it takes to repair a product after it fails, while MTTR does not consider the total time between #failures.

Example:
No. of Failures = 6 (Denominator for MTTR, MTBR Calculations)
Total Uptime = U1 + U2 +U3 + U4 + U5 + U6 + U7. = Say 900 Hrs.
Total Downtime = D1 + D2 + D3 + D4 + D5 + D6. = Say 108 Hrs.
We know that MTTR (Mean Time to Repair in Hrs) = ( D1 + D2 + D3 + D4 + D5 + D6 ) / 6 = 18.
Similarly MTBR (Mean Time Between Repairs in Hrs) = ( U1 + U2 +U3 + U4 + U5 + U6 + U7 ) / 6 = 150

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Source: LinkedIn

Credits: Mr. Asad Ahmad