A Survey on Data Center Networking (DCN): Infrastructure and Operations
A Survey on Data Center Networking (DCN): Infrastructure and Operations
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DOI：
10.1109/comst.2016.2626784
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发表时间：
2017-01
影响因子：
35.6
通讯作者：
Wenfeng Xia;Peng Zhao;Yonggang Wen;Haiyong Xie
中科院分区：
文献类型：
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作者：
Wenfeng Xia;Peng Zhao;Yonggang Wen;Haiyong Xie
由于互联网服务的指数级增长，数据中心（DC）已成为推动这一不断增长趋势的不可替代的关键基础设施。DC通常容纳大量计算和存储节点，这些节点通过专门设计的网络（即DC网络（DCN））互连。DCN作为通信骨干，在优化DC运营方面发挥着关键作用。然而，与传统网络相比，DCN中的独特要求，例如大规模、广泛的应用多样性、高功率密度和高可靠性，对其基础设施和运营提出了重大挑战。我们从高级出版场所（例如，期刊和系统会议），越来越多的研究工作正在致力于优化DCN的设计和操作。在本文中，我们的目的是提出一个系统的分类和调查最近的研究工作的DCN。具体来说，我们建议将这些研究工作分为两个领域：1）DCN基础设施和2）DCN操作。对于前一个方面，我们回顾并比较了DCN基础设施中使用或提议的传输技术和网络拓扑列表。对于后者，本文总结了DCN运营中现有的流量控制技术，并探讨了实现高网络利用率、公平带宽共享、低服务延迟、低能耗、高弹性等多种运营目标的优化方法。高效的DC操作。最后，我们通过展望DCN基础设施和运营方面的一些开放研究机会来结束这项调查。
Data centers (DCs), owing to the exponential growth of Internet services, have emerged as an irreplaceable and crucial infrastructure to power this ever-growing trend. A DC typically houses a large number of computing and storage nodes, interconnected by a specially designed network, namely, DC network (DCN). The DCN serves as a communication backbone and plays a pivotal role in optimizing DC operations. However, compared to the traditional network, the unique requirements in the DCN, for example, large scale, vast application diversity, high power density, and high reliability, pose significant challenges to its infrastructure and operations. We have observed from the premium publication venues (e.g., journals and system conferences) that increasing research efforts are being devoted to optimize the design and operations of the DCN. In this paper, we aim to present a systematic taxonomy and survey of recent research efforts on the DCN. Specifically, we propose to classify these research efforts into two areas: 1) DCN infrastructure and 2) DCN operations. For the former aspect, we review and compare the list of transmission technologies and network topologies used or proposed in the DCN infrastructure. For the latter aspect, we summarize the existing traffic control techniques in the DCN operations, and survey optimization methods to achieve diverse operational objectives, including high network utilization, fair bandwidth sharing, low service latency, low energy consumption, high resiliency, and etc., for efficient DC operations. We finally conclude this survey by envisioning a few open research opportunities in DCN infrastructure and operations.