Topics: Operating Systems : Persistent

Persistence is the trait of maintaining system state despite discontinuities in operation or use, such as from one use of a program to the next use. In simple terms, persistent programs lose no, or little, information if the system becomes inoperative suddenly. As most computer users know, many computers often become inoperative suddenly, for two main reasons: the electric power stops, or a program crashes.Persistent operating systems (OSs) are OSs that maintain global persistence for all threads, processes, and programs that are running, as they run.