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This paper presents a different perspective of fault tolerance using redundancy. This kind of fault tolerance is chosen to survive a system by recovery process. The model focuses on how we preserve the system and resume its critical service while incident occurs by reconfiguring the damage resources based on available resources without affecting the stability of the system. There are three critical requisite conditions in this recovery model, the number reconfiguration resource, the time of reconfiguration, and the cost of reconfiguration. A hierarchical order based on those conditions is chosen to decide the reconfiguration scheme. In this paper, the work focuses on multiple critical services.
Date of Conference: 8-10 Sept. 2008