Allocation of Discrete Energy on a Cloud-Computing Datacenter Using a Digital Power Grid
Allocation of Discrete Energy on a Cloud-Computing Datacenter Using a Digital Power Grid
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使用数字电网在云计算数据中心上分配离散能源
DOI：
10.1109/greencom.2012.94
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
H. Grebel
中科院分区：
文献类型：
--
作者：
Yifei Xu;R. Rojas;H. Grebel
数据中心的电力供应构成了主要的运营成本。在本文中，我们专注于提供供应能量，以精确匹配的消费需求，通过使用数字电网的属性。与目前的电网不同的是，在目前的电网中，能量是连续供应的，并且满足大量的需求，数字电网以数据包的形式并根据请求供应能量。能量包专门针对一个或多个服务器，而不是其他服务器，它们携带所请求的能量。为了评估能源供应的水平，我们建模的消费时间的服务器作为一个ON-OFF马尔可夫链。通过仿真，我们表明，数字电网不仅降低了当前能源供应商为确保系统稳定性而使用的能源安全裕度，而且在电网容量等于平均能源需求且没有安全裕度时，还高度满足了数据中心服务器的能源需求。
Electrical power supply of data centers constitutes major operational costs. In this paper, we focus on providing the supplying energy to exact match the consumption demands by using the properties of a digital power grid. Different from the present power grid, where energy is supplied continuously and in amounts to satisfy large demands, the digital power grid supplies energy in the form of packets and upon request. Energy packets are specifically addressed to one, or multiple servers and to no others, and they carry the amount of energy that has been requested. To evaluate the level of energy supply, we model the consumption time of a server as an ON-OFF Markov chain. Through simulation, we show that the digital grid not only reduces the energy safety margins used by current energy providers to assure system stability but it also highly satisfies the energy requests of data center servers when the capacity of the power grid equals the average energy request and without a safety margin.