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

Over the past decade, many data centers have been constructed around the world due to the explosive growth of data volume and type. The cost and energy consumption have become the most 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 <italic>Exchanged Cube-Connected Cycles (ExCCC)</italic>. The <italic>ExCCC</italic> network is an extension of <italic>Exchanged Hypercube (EH)</italic> network by replacing each node with a cycle. The <italic>EH</italic> network is based on link removal from a <italic>Hypercube</italic> network, which makes the <italic>EH</italic> network more cost-effective as it scales up. After analyzing the topological properties of <italic>ExCCC</italic>, we employ commodity switches to construct a new class of data center network models, namely <italic>ExCCC-DCN</italic>, by leveraging the advantages of the <italic>ExCCC</italic> architecture. The analysis and experimental results demonstrate that the proposed <italic>ExCCC-DCN</italic> models significantly outperform four state-of-the-art data center network models 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.