Leveraging Heterogeneous Power for Improving Datacenter Efficiency and Resiliency
Leveraging Heterogeneous Power for Improving Datacenter Efficiency and Resiliency
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DOI：
10.1109/lca.2014.2363084
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发表时间：
2015
影响因子：
2.3
通讯作者：
Longjun Liu;Chao Li;Hongbin Sun;Yang Hu;J. Xin;Nanning Zheng;Tao Li
中科院分区：
文献类型：
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作者：
Longjun Liu;Chao Li;Hongbin Sun;Yang Hu;J. Xin;Nanning Zheng;Tao Li
在供应不足或由间歇性电源供电的现代电力中心中，供需之间的功率不匹配已成为首要问题。最近的提议主要限于利用不间断电源（UPS）来处理功率失配，因此缺乏有效地处理不规则峰值功率失配的能力。在本文中，我们提出了hPower，第一个异构的能量缓冲策略，将超级电容器纳入现有的电容器来处理功率失配。我们的技术利用电源的多样性和智能负载分配，提供效率意识和紧急意识的电源失配管理。我们发现，hPower可以将能源效率提高30%，将UPS寿命延长4.3倍，并将系统停机时间减少36%。它使供电中心能够适应各种电源异常，从而提高运营效率和弹性。
Power mismatching between supply and demand has emerged as a top issue in modern datacenters that are under-provisioned or powered by intermittent power supplies. Recent proposals are primarily limited to leveraging uninterruptible power supplies (UPS) to handle power mismatching, and therefore lack the capability of efficiently handling the irregular peak power mismatches. In this paper we propose hPower, the first heterogeneous energy buffering strategy that incorporates supercapacitors into existing datacenters to handle power mismatch. Our technique exploits power supply diversity and smart load assignment to provide efficiency-aware and emergency-aware power mismatch management. We show that hPower could improve energy efficiency by 30 percent, extend UPS lifetime by 4.3×, and reduce system downtime by 36 percent. It allows datacenters to adapt themselves to various power supply anomalies, thereby improving operational efficiency and resiliency.