Mean Time To Recovery


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Mean Time To Recovery

(specification)
(MTTR) The average time that a device will take to recover from a non-terminal failure. Examples of such devices range from self-resetting fuses (where the MTTR would be very short, probably seconds), up to whole systems which have to be replaced.

The MTTR would usually be part of a maintenance contract, where the user would pay more for a system whose MTTR was 24 hours, than for one of, say, 7 days. This means the supplier is guaranteeing to have the system up and running again within 24 hours (or 7 days) of being notified of the failure.

Some devices have a MTTR of zero, which means that they have redundant components which can take over the instant the primary one fails, see RAID for example.

See also Mean Time Between Failures.
References in periodicals archive ?
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BMR fully automates the recovery process for Tivoli Storage Manager and ensures complete integrity and consistency of all critical elements and significantly reduces the mean time to recovery.