noun
fault-tolerance
Technical term in computing and engineering for a system's ability to continue operating properly in the event of a failure of some of its components.
このサーバーはフォールトトレランスを備えているので、一部が故障してもサービスが停止しない。
This server has fault-tolerance, so the service won't stop even if some parts fail.
冗長性 (redundancy) is a design principle often used to achieve fault-tolerance, but it specifically refers to having extra components, while フォールトトレランス is the broader property of withstanding failures.
Loanword from English 'fault-tolerance'.