Y> AutomaticallY switching to a redundant or standbY server, sYstem, or network upon the failure or abnormal termination of the currentlY-active server, sYstem, or network (a "hot standbY" or "warm standbY"). Failover happens without human intervention. This feature is usuallY built-in to expensive sYstems which must be available continuouslY. (2001-03-19)