ExCCC-DCN: A Highly Scalable, Cost-Effective and Energy-Efficient Data Center Structure

Over the past decade, many data centers have been constructed around theworld due to the explosive growth of data volume and type. The cost and energy consumption have become themost important challenges of building those data centers. Data centers today use commodity computers and switches instead of high-end servers and interconnections for cost-effectiveness. In this paper, we propose a new type of interconnection networks called Exchanged Cube-Connected Cycles (ExCCC). The ExCCC network is an extension of Exchanged Hypercube (EH) network by replacing each node with a cycle. The EH network is based on link removal froma Hypercube network, whichmakes the EH networkmore cost-effective as it scales up. After analyzing the topological properties of ExCCC, we employ commodity switches to construct a new class of data center networkmodels, namely ExCCC-DCN, by leveraging the advantages of the ExCCC architecture. The analysis and experimental results demonstrate that the proposed ExCCC-DCNmodels significantly outperform four state-of-the-art data center networkmodels in terms of the total cost, power consumption, scalability, and other static characteristics. It achieves the goals of low cost, low energy consumption, high network throughput, and high scalability simultaneously.