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Adding local short description: "Fault-tolerant computer system", overriding Wikidata description "method of fault-tolerant computing by running operations at the same time in parallel" |
Citation bot (talk | contribs) Added publisher. | Use this bot. Report bugs. | Suggested by Spinixster | Category:Classes of computers | #UCB_Category 9/91 |
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| year = 1996 | accessdate = 2014-09-08
| author = Stefan Poledna | page = 80
| publisher = Springer
| 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]] DMR), and the error can be automatically corrected if there are at least three systems ([[triple modular redundancy]] TMR), 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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