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Citation bot (talk | contribs) Removed parameters. | Use this bot. Report bugs. | Suggested by Spinixster | Category:Classes of computers | #UCB_Category 6/90 |
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| title = Fault-Tolerant Real-Time Systems: The Problem of Replica Determinism
| year = 1996 | accessdate = 2014-09-08
| author = Stefan Poledna |
| isbn = 9780585295800
}}</ref> The [[Redundancy (engineering)|redundancy]] (duplication) allows error detection and error correction: the output from lockstep operations can be compared to determine if there has been a fault if there are at least two systems ([[dual modular redundancy]]), and the error can be automatically corrected if there are at least three systems ([[triple modular redundancy]]), via majority vote. The term "[[lockstep]]" originates from army usage, where it refers to synchronized walking, in which marchers walk as closely together as physically practical.
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