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.

Last updated: 1998-05-01

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