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• W2904658604 abstract "The massive and irregular load surges challenge datacenter power infrastructures. As a result, power mismatching between supply and demand has emerged as a crucial availability issue in modern datacenters which are either under-provisioned or powered by intermittent power sources. Recent proposals have employed energy storage devices such as the uninterruptible power supply (UPS) to address this issue. However, current approaches lack the capacity of efficiently handling the irregular and unpredictable power mismatches. In this paper, we propose Hybrid and Hierarchical Energy Buffering (HHEB), a novel heterogeneous and adaptive scheme that could enable various energy storage devices (ESDs) to be efficiently integrated into existing datacenters for dynamically dealing with power mismatches. Our techniques exploit the diverse characteristics of different ESDs and intelligent load assignment algorithms to improve the dependability and efficiency of datacenter power systems. We evaluate the HHEB design with a prototype. Compared with a homogenous battery energy buffering system, HHEB could improve energy efficiency by 39.7 percent, extend UPS lifetime by 4.7X, promote energy availability by 3.2X, reduce system downtime by 41 percent, and effectively improve the energy availability of various energy buffers in different hierarchies. It allows datacenters to adapt to various power supply anomalies, thereby improving operational efficiency, dependability and availability." @default.
• W2904658604 created "2018-12-22" @default.
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• W2904658604 date "2021-07-01" @default.
• W2904658604 modified "2023-10-18" @default.
• W2904658604 title "Exploring Highly Dependable and Efficient Datacenter Power System Using Hybrid and Hierarchical Energy Buffers" @default.
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• W2904658604 doi "https://doi.org/10.1109/tsusc.2018.2886382" @default.
• W2904658604 hasPublicationYear "2021" @default.
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