CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search "Byzantine generals" redirects here. For actual military generals of the Byzantine empire, see Category:Byzantine generals . In fault-tolerant computer systems , and in particular distributed computing systems, Byzantine fault tolerance is the characteristic of a system that tolerates the class of failures known as the Byzantine Generals' Problem , [1] which is a generalized version of the Two Generals' Problem - for which there is an unsolvability proof. Byzantine failures are considered the most general and most difficult class of failures among the failure modes . So called fail-stop failure mode occupies the simplest end of the spectrum. Whereas fail-stop failure model simply means that the only way to fail is a node crash, detected by other nodes, Byzantine failures imply no restricti...