MTBF, MTTR, RPO, RTO

MTBF (Mean Time Between Failures) is the average time expected between outages. This is usually an estimation based on the internal device components and their expected operational lifetime.

A. MTTR MTTR (Mean Time to Repair) is the time required to repair a product or system after a failure.

B. RPO RPO (Recovery Point Objectives) define how much data loss would be acceptable during a recovery.

C. RTO RTO (Recovery Time Objectives) define the minimum objectives required to get up and running to a particular service level.