Proliferation of large and complex fault-tolerant distributed applications has stimulated the use of separate management components for automatic detection of software and hardware failures and for reconfiguration. This paper describes an analytical model, called the Dependable-LQN model, for evaluating combined performance and dependability attributes of client-server applications that now include these additional management components and their interactions. It also constructs and analyzes a model for a large-scale Air Traffic Control system in order to demonstrate the model's capability in evaluating large systems.
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