Definitions Edit

Mean time to repair (MTTR) is

[t]he estimated length of time needed to bring a system back up and make it fully operational following a system failure.[1]
[a] measure of reliability of a piece of repairable equipment, giving the average time between repairs.[2]
[t]he total amount of time spent performing all corrective maintenance repairs divided by the total number of those repairs.[3]

References Edit

  1. Government Smart Card Handbook, App. A, at A-5.
  2. U.S. Food and Drug Administration, Glossary of Computerized System and Software Development Technology 19 (Aug. 1995) (full-text).
  3. Unified Capabilities, Framework 2013, App. C, at C-27 (full-text).

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