After 9/11 incident, the United States Securities and Exchange Commission (SEC) issued a white paper to strengthen the financial system on the grounds of security for the proposed financial institutions. It suggests that the primary and secondary data center of financial systems should be kept from 200 to 300 miles (about 320~480 kilometers) away. Such announcement aroused a good deal of discussion and feedback. Although the equipments in the secondary data center are usually idle, the energy consumption cannot be avoided. It was off to another recent discussion of the green data center problem. This study is divided into three main issues, first of all, is the consideration of setting up the long-range backup data center, followed by discussion of how to be coupled with the consideration of the greening computing without sacrificing the stability of the original system, finally we discuss issue of reducing the disaster recovery time.