A New Framework for the Evaluation of QoS in Cloud Federation

In cloud computing it is assumed that a single cloud with increased service demands because of the limitations of the hardware and software resources, can encounter overload. Cloud Federation is an ideal solution to overcome these problems. There are different types of single and hybrid clouds in Cloud Federation. Also, one of the aspects of union activity is based on borrowing hardware and software resources and other cloud computing to reduce and stop the over load of host cloud. Therefore, measuring the quality of a single cloud service and hybrid cloud service in cloud federation carries much importance. To this end, the models based on the initial model were used to measure the Quality of Service . The present paper by providing an appropriate framework through a dynamic measuring mechanism calculates service quality parameters like average failure rate and reliability for each cloud service and then for root hybrid cloud service. The simulation results of this measurement mechanism compared to the type of cloud service connectivity in hybrid cloud service shows improvement in the parameters of the quality of hybrid cloud service.