SSNF: Shared Datacenter Mechanism for Inter-datacenter Bulk Transfer

Cloud service providers (CSP) usually deploy geographically distributed data centers to improve QoS for colocated customers. Inter-Data center traffic constitutes almost half of the data center´s export traffic and occupies significant part of the operational cost. Many store-and-forward mechanisms have been proposed to improve the efficiency of inter-data center transfer. However, existing store-and-forward solutions to the inter-datacenter traffic problem need sufficient and suitable intermediate nodes for transferring data, which is much more difficult for both the small and the big CSPs. In this paper, we present a shared datacenter scheduling mechanism called SSNF, which focus on providing more idle intermediates to increase the transmission success ratio for the inter-datacenter traffic. In SSNF, CSPs share datacenters which have idle storage resource and provide these idle datacenters as intermediate nodes for other CSP´s data transmission. We compared our scheme with existing bulk data transfer mechanism under several different simulation settings. The results demonstrate our solution has a better transmission success ratio and achieves high efficiency for inter-datacenter traffic.