Performance Evaluation of virtualization hypervisors when using Distributed Replicated Block Device as a shared storage in cluster

The Virtualization is the main structure, and the most important component from the others cloud computing components. Due to the features which are produced only from the virtual environment, such as flexibility, cost, energy saving, and the optimal usage of the resources, most business companies and the governments look ahead for deploying their services and applications on virtual severs instead of the physical ones. That point made the researchers heading toward performance comparing through different virtual environments. For reaching the best possible environment which is suitable to be used in the cloud computing, and to get the high performance computing. We described the effect evolution of the virtual environment on the high performance computing as a service, through changing the type of the used virtual environment in the infrastructures. We used the virtual environment XEN-PV ( XEN-Paravirtualization) as an infrastructures for the high performance. Lastly, I used the XEN-HVM (XEN HardWare virtual machine ), XEN is the main hypervisor in Citrix company and the performance has been evaluated by using DRBD as a shared storage of virtual disk. The results of our researches proved that both the virtual environment, and the selected clustering charts have a visible, important role in the performance of the “The high performance computing”.