Maximizing Utility of Time-Constrained Emergency Backup in Inter-Datacenter Networks

This work addresses the emergency backup problem in inter-datacenter (inter-DC) network, which is triggered in response to predictable destructive events. We consider the value of data and study how to maximize the utility of time-constrained emergency backup. Specifically, we first formulate the utility-maximization problem for a time-varying network environment and then leverage the time-expanded network (TEN) approach to transform it into a static network problem. To finally solve the problem, a time-efficient and distributed algorithm is proposed based on the dual decomposition technique. Simulation results show that our algorithm outperforms existing algorithms.