G-Cloud: A Highly Reliable and Secure IaaS Platform

Cloud computing has good prospects in many application fields, because it dramatically reduces the construction cost, brings data integration capability, and has efficient and flexible working models. One core layer of cloud platform is the IaaS layer. In this paper, an instance of IaaS platform is proposed, called G-Cloud, which is a cloud operating system and supports the virtualization and unified management of large-scale computing resources, storage resources, and network resources. We describe the design and implementation of this platform, focusing on its reliability and security. Experimental results of real applications show that its availability and throughput fulfill users´ requirements. We hope this platform will be promoted in more fields.