Impact of elevated temperature on data center operation based on internal and external IT instrumentation
Impact of elevated temperature on data center operation based on internal and external IT instrumentation
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DOI：
10.1109/semi-therm.2017.7896916
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Mohammad I. Tradat;H. Alissa;K. Nemati;Sadegh Khalili;B. Sammakia;M. Seymour;Russell Tipton
中科院分区：
文献类型：
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作者：
Mohammad I. Tradat;H. Alissa;K. Nemati;Sadegh Khalili;B. Sammakia;M. Seymour;Russell Tipton
如今的数据中心越来越依赖环境数据收集和分析来尽可能高效地运行冷却基础设施，并维护IT设备的可靠性。这反过来又强调了所收集数据的质量及其与数据中心整体运营的相关性的重要性。这项研究使用两种不同的方法对环境和电力数据收集进行了基于实验的分析和比较；一种方法使用离散传感器网络和智能PDU，另一种方法使用安装的IT设备中的可用数据(IPMI数据)。该比较深入研究了控制数据中心冷却所采用的两种方法的效果。此外，在CPU利用率为100%的全密封冷通道安全壳(CAC)中，研究了计算机机房空气处理器(CRAH)单元的送风温度(SAT)对IT设备的影响。可以观察到，IT设备的离散和IPMI入口温度之间的差异随着SAT的增加而增加，这是因为IT风扇为了获得更多的冷却而提高了速度，并且导致安全壳内部的负压差积累。此外，作者还确定了数据中心冷却和控制两种方法的IT设备开始提升的送风温度的值。这项研究的新颖性可能有助于数据中心操作员决定使用哪种监视或控制方案。
Today's data centers increasingly rely on environmental data collection and analysis to operate the cooling infrastructure as efficiently as possible and to maintain the reliability of IT equipment. This in turn emphasizes the importance of the quality of data collected and its relevance to the overall operation of the data center. This study presents an experiment based analysis and comparison of environmental and power data collection using two different approaches; one uses a discrete sensor network and smart PDUs, and another uses available data from the installed IT equipment (IPMI data). The comparison looks deeply into the effect of both approaches that are adopted to control data center cooling. In addition, the effect that the Supply Air Temperature (SAT) from the Computer Room Air Handler (CRAH) unit had on the IT equipment was investigated in fully sealed Cold Aisle Containment (CAC) with 100% CPU utilization. It can be observed that the difference between the discrete and IPMI inlet temperature of the IT equipment increased as SAT increased due to the IT fans increasing speed in an attempt to get more cooling and the resulting in negative pressure differential build up inside the containment. Furthermore, the authors identified a value of the supply air temperature at which IT equipment started to ramp up for both approaches of data center cooling and control. The novelty of this study may aid data center operators when making the decision of what monitoring or control scheme to use.