SIMULATING FAULT TOLERANCE IN CLOUD COMPUTIN BY MIGRATION USING CLOUDSIM SIMULATOR X

摘要

The concept of cloud computing refers to the resources and computer systems available over the Internet through which we can provide a number of integrated computing services without being restricted to existing local resources, but the dynamic nature of cloud computing can suffer from many faults that affect the quality of service provided to the customer. The ability of the system to respond and deal with these faults determines its ability to tolerate faults and thus affect the quality of service provided. The main objective of this research is to achieve faults tolerance by using the CloudSim simulator, by using a random model that generates faults in processors (PE) in a virtual machine (VM), and then applying a proposed algorithm in this search which migrates the existing Cloudlets from the disabled virtual machine on a host to another virtual machine on another host. In the first stage, the fault generation was achieved within the CloudSim simulator, and in the second stage, the faults were processed by implementing migration algorithm. The results showed a high reliability and availability is relatively good when the number of performed cloudlets multiplied tenfold.