Any system of hardware and/or software maintained as a backup to the main system. If a failure occurs in the primary system, the fallback system takes over. See failover and fault tolerant.
"fallback system." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/fallback-system>.
fallback system. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/fallback-system