Title :
Warm standby in hierarchically structured process-control programs
Author :
Chen, Ing-Ray ; Bastani, Farokh B.
Author_Institution :
Inst. of Inf. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
fDate :
8/1/1994 12:00:00 AM
Abstract :
We classify standby redundancy design space in process-control programs into the following three categories: cold standby, warm standby, and hot standby. Design parameters of warm standby are identified and the reliability of a system using warm standby is evaluated and compared with that of hot standby. Our analysis indicates that the warm standby scheme is particularly suitable for long-lived unmaintainable systems, especially those operating in harsh environments where burst hardware failures are possible. The feasibility of warm standby is demonstrated with a simulated chemical batch reactor system
Keywords :
computer integrated manufacturing; fault tolerant computing; process computer control; redundancy; software maintenance; software reliability; burst hardware failures; cold standby; hierarchically structured process-control programs; hot standby; long-lived unmaintainable systems; process-control programs; simulated chemical batch reactor system; standby redundancy design space; system reliability; warm standby; Circuit faults; Control systems; Costs; Delay effects; Fault tolerance; Hardware; Process control; Process design; Real time systems; Redundancy;
Journal_Title :
Software Engineering, IEEE Transactions on
