Failure Statistics
Mean time between failures (MTBF)
- Number of hours or days of continuous operation
- Indicates the reliability of a component
Mean time to repair (MTTR)
- Average number of minutes or hours until the failed device is operational again
Average number of minutes until the root cause is diagnosed (shows efficiency of NOC)
Average number of minutes until the service or vendor personnel arrives at location
Average number of minutes until problem is fixed (shows efficiency of repair people)
MTTRepair = MTTDiagnose + MTTRespond + MTTFix