Exploiting Renewable Sources: When Green SLA Becomes a Possible Reality in Cloud Computing
Exploiting Renewable Sources: When Green SLA Becomes a Possible Reality in Cloud Computing
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DOI：
10.1109/tcc.2015.2459710
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发表时间：
2017-04
影响因子：
6.5
通讯作者：
Md. Sabbir Hasan;Yousri Kouki;T. Ledoux;Jean-Louis Pazat
中科院分区：
文献类型：
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作者：
Md. Sabbir Hasan;Yousri Kouki;T. Ledoux;Jean-Louis Pazat
虽然云服务的激增极大地影响了我们的社会，但这些服务的绿色程度还有待回答。尽管由于社会意识，对绿色服务的需求升级已经增长，但是提供绿色服务和建立绿色SLA的方法仍然被云或基础设施提供商遗忘。云提供商面临的主要挑战是与客户一起管理绿色SLA，同时满足其业务目标，例如通过降低绿色能源支出来实现利润最大化。由于绿色SLA需要基于绿色能源的存在来提出，可再生能源的间歇性使其难以实现。针对这一问题，提出了一种数据中心可再生能源显式和隐式集成的绿色能源管理方案。更具体地说，我们提出了三个贡献：i）我们介绍了虚拟化的概念，绿色能源，以解决绿色能源的可用性的不确定性，ii）我们扩展了云服务水平协议（CSLA）的语言，以支持绿色SLA通过引入两个新的阈值参数和iii）我们介绍绿色SLA算法，它利用虚拟化的概念，绿色能源，以提供每间隔特定的绿色SLA。通过PlanetLab提供的真实的工作负载模型和SPECpower提供的服务器功耗模型进行实验，证明了在不增加成本的情况下，可以成功地建立并满足绿色SLA。
While the proliferation of cloud services have greatly impacted our society, how green are these services is yet to be answered. Although, demand escalation for green services has grown due to societal awareness, the approaches to provide green services and establish Green SLAs remain oblivious for cloud or infrastructure providers. The main challenge for cloud provider is to manage Green SLAs with their customers while satisfying their business objectives, such as maximizing profits by lowering expenditure for green energy. Since, Green SLA needs to be proposed based on the presence of green energy, the intermittent nature of renewable sources makes it difficult to be achieved. In response, this paper presents a scheme for green energy management in the presence of explicit and implicit integration of renewable energy in data center. More specifically we propose three contributions: i) we introduce the concept of virtualization of green energy to address the uncertainty of green energy availability, ii) we extend the Cloud Service Level Agreement (CSLA) language to support Green SLA by introducing two new threshold parameters and iii) we introduce greenSLA algorithm which leverages the concept of virtualization of green energy to provide per interval specific Green SLA. Experiments were conducted with real workload profile from PlanetLab and server power model from SPECpower to demonstrate that, Green SLA can be successfully established and satisfied without incurring higher cost.