A Case for Virtualizing the Electric Utility in Cloud Data Centers
A Case for Virtualizing the Electric Utility in Cloud Data Centers
复制标题
云数据中心电力虚拟化案例
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Qian Wang
中科院分区：
文献类型：
--
作者：
Cheng Wang;B. Urgaonkar;G. Kesidis;U. Shanbhag;Qian Wang
由于与能源相关的成本在云提供商运营的数据中心的总成本中占越来越大的比例，因此必须以公平的方式将这些成本传递给租户，并促进与总体成本效益保持一致的工作负载调整。我们认为，电力公用事业公司向数据中心收取能耗费用的方式(一方面)与云提供商向租户公开的定价界面(另一方面)存在很大差距。电力公用事业使用复杂的功能，如基于峰值、时变或分级(取决于负载)的定价方案，而云提供商根据IT抽象向租户收费。这一差距可能会造成诸如租户收费方式不公平等缺陷，并可能阻碍整体具有成本效益的资源分配。为了克服这些缺点，我们提出了一个虚拟电力设施(VEU)的新想法，云提供商应该向单个租户公开(除了他们现有的基于IT的产品之外)。我们讨论了作为执行单位基础的初步想法和必须解决的挑战，以便将其转变为一个可以系统地探讨其优点的实际想法。
Since energy-related costs make up an increasingly significant component of overall costs for data centers run by cloud providers, it is important that these costs be propagated to their tenants in ways that are fair and promote workload modulation that is aligned with overall cost-efficacy. We argue that there exists a big gap in how electric utilities charge data centers for their energy consumption (on the one hand) and the pricing interface exposed by cloud providers to their tenants (on the other). Whereas electric utilities employ complex features such as peak-based, time-varying, or tiered (load-dependent) pricing schemes, cloud providers charge tenants based on IT abstractions. This gap can create shortcomings such as unfairness in how tenants are charged and may also hinder overall cost-effective resource allocation. To overcome these shortcomings, we propose a novel idea of a virtual electric utility (VEU) that cloud providers should expose to individual tenants (in addition to their existing IT-based offerings). We discuss initial ideas underlying VEUs and challenges that must be addressed to turn them into a practical idea whose merits can be systematically explored.