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Which of the following disaster recovery concepts is calculated by dividing the total hours of operation by the total number of units?
Correct Answer: B
Introduction to Disaster Recovery Concepts: Disaster recovery involves strategies and measures to ensure business continuity and data recovery in the event of a disaster. Mean Time Between Failures (MTBF): MTBF is a reliability metric used to predict the time between failures of a system during operation. It is calculated by dividing the total operational time by the number of failures. Formula: MTBF=TotalOperationalTimeNumberofFailures\text{MTBF} = \frac{\text{Total Operational Time}}{\text{Number of Failures}}MTBF=NumberofFailuresTotalOperationalTime This metric helps in understanding the reliability and expected lifespan of systems and components.