Recovering Cloud Services Using Hybrid Clouds Under Power Outage

The rapid development of the Internet and cloud computing are giving people high quality online services, which are usually deployed in cloud data centers. While the clouds are not always failure-free, in case of a power failure in a cloud data center, it is important to reduce the cost of disaster recovery meanwhile ensuring cloud service performance. To solve the service recovery problem of cloud data center under a power outage, in this paper, we propose an online solution based on hybrid cloud framework, which resolves the service workload management optimization between private cloud and public one. By using Lyapunov optimization technology, the long-term online optimization problem can be transformed into a general one. Besides, we present a power-aware on-line control algorithm (POCA) which achieves a trade-off between power consumption and cost, and the simulation results show that the proposed POCA algorithm can give a better and efficient performance.