Citizendium - a community developing a quality, comprehensive compendium of knowledge, online and free.
Click here to join and contribute
CZ thanks our previous donors. Donate here. Treasurer's Financial Report

Fault tolerance

From Citizendium
Jump to: navigation, search
This article is a stub and thus not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
This editable Main Article is under development and subject to a disclaimer.

In engineering, fault tolerance is a characteristic of a system that can have one or more subcomponents fail without the entire system failing. This does not mean that the system has no single point of failure, but that at least some parts can fail and have continued operation; a system might be robust to a component failure, but have no backup for complete physical destruction.

With the loss of some components, there might be a loss of performance or functionality, or the system could be engineered with reserve capacity such that some failures would not be noticed by users.

Simple duplication of components does not make a system fault-tolerant; there needs to be an intelligent mechanism for spreading the work around the failure.