1. Amazon, Amazon Elastic Compute Cloud (Amazon EC2). 〈http://aws.amazon.com/ec2/〉.
2. The ChinaGrid website [online]. Available: 〈http://www.chinagrid.edu.cn〉.
3. VMware. Vmware vcloud. 〈http://www.vmware.com/technology/cloud-computing.html〉.
4. Data center fundamentals;Arregoces,2003
5. Reliability engineering theory and practice;Birolini,2007