Disaster-aware WDM network design for data centres

Natural disasters and deliberate attacks may cause large scale damage to communication networks. Such disasters affect specific geographic areas so that, when a disaster occurs, a set of geographically close network components (e.g., nodes and links) may fail simultaneously. It is crucial to develop a robust communication scheme to handle requests for communication, that includes provisions to handle disasters. In this paper we have proposed an optimal approach to the problem of developing robust schemes for communication to handle requests for communication in data center (DC) networks. We have formulated our problem as an Integer Linear Program (ILP) which minimizes the network resources needed to develop such robust schemes. We have studied our approach using simulations, varying parameters, such as the number of DCs, the number of disasters, and the optical reach.