failover

n. [电脑][数据库]失效备援 （为系统备援能力的一种，当系统中其中一项设备失效而无法运作时，另一项设备即可自动接手原失效系统所执行的工作）

发音

UK

词形变化

failovers 复数 failovers

释义与例句

n.
  1. 1.

    An automatic switch to a secondary system on failure of the primary system, such as a means for ensuring high availability of some critical resource (such as a computer system), involving a parallel backup system which is kept running at all times, so that, upon detected failure of the primary system, processing can be automatically shifted over to the backup.

    可数 不可数 计算机 工程 数学

词源

Deverbal from fail over.

来源：wiktionary