Performability Evaluation of Eft Systems

In the Electronic Funds Transfer (EFT) Systems, faults can cause severe degradation on the performance of this system. Thus, modelling the performance of EFT system without considering dependability aspects can cause inaccurate results. This paper presents a stochastic model for evaluating performance of processing and storage infrastructures of the EFT system. This work also presents a model for evaluating the effects of the proposed preventive maintenance policy and different service level agreements (SLA) on the dependability of the EFT system infrastructure. Then, this paper combines both models (dependability and performance) for evaluating the impact of dependability issues on the performance of the EFT system. Finally, case studies considering EFT system infrastructures are provided to demonstrate the applicability of the adopted approach. Moreover, the results of these case studies are depicted, stressing important aspects of dependability and performance for EFT system planning.