Certified Data Centre Professional (CDCP) Practice Exam

Mean time to repair (MTTR) refers to the average duration required to fix a failed component or system and restore it to operational status. This metric is essential in assessing the maintainability of equipment and systems as it provides insight into the efficiency of repair processes. By focusing on the time taken to carry out repairs, MTTR helps organizations understand how quickly they can recover from failures, which is crucial for minimizing downtime and ensuring continuity of service.

The other options represent concepts that do not accurately define MTTR. The maximum time allowed for system repairs typically relates to service-level agreements (SLAs) rather than the average time taken for repairs. The average operational time before a system failure describes reliability rather than the repair process. Lastly, the time required to replace system components is more specific to component replacement rather than encompassing the broader definition of repair, which may include diagnostics, parts replacement, and testing.