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mean down time (MDT)

Mean Down Time (MDT) means average fault duration. It is a measure of the availability ofsystems, networks and services

. Mean down time refers to the average time required to eliminate a fault after the failure of a system, device or service. During the mean down time, the technical equipment is not operational.

The mean down timeincludes repair, maintenance and setup times and all administrative delays.

The difference between the mean down time and the mean repair time, the Mean Time to Repair (MTTR), is that the mean down time concerns all repair and other delays until operations are restored, whereas the MTTR concerns only the time required for repair.

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Englisch: mean down time - MDT
Updated at: 10.10.2011
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Translations: DE