7 July 2014 On the performance of a scalable optical switching architecture for flat intercluster data center network with centralized control
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Abstract
Data centers have to sustain the rapid growth of data traffic due to the increasing demand of bandwidth-hungry Internet services. The current fat tree topology causes communication bottlenecks in the server interaction process, resulting in power-hungry O-E-O conversions that limit the minimum latency and the power efficiency of these systems. As a result, recent efforts have advocated that all optical data center networks (DCNs) have the capability to adapt to traffic requirements on demand. We present the design, implementation, and evaluation of a cascaded microelectromechanical systems switches-based DCN architecture which dynamically changes its topology and link capacities, thereby achieving unprecedented flexibility to adapt to dynamic traffic patterns. We analyze it under a data center traffic model to determine its suitability for this type of environment. The proposed architecture can be scaled to 3300 input/output ports by available experimental components with low blocking probability and latency. The blocking probability and latency are about 0.03 and 72 ms at a moderate traffic load for 32 input/output ports based on our numerical results, which are much smaller than the results for 4 input/output ports which are 0.13 and 235 ms, respectively.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qian Kong, Shanguo Huang, Yu Zhou, Bingli Guo, Yongli Zhao, Min Zhang, Jie Zhang, Wanyi Gu, "On the performance of a scalable optical switching architecture for flat intercluster data center network with centralized control," Optical Engineering 53(7), 075101 (7 July 2014). https://doi.org/10.1117/1.OE.53.7.075101 . Submission:
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