NDLI: A robust optimization for proactive energy management in virtualized data centers

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A robust optimization for proactive energy management in virtualized data centers

Content Provider	ACM Digital Library
Author	Takouna, Ibrahim Dawoud, Wesam Sachs, Kai Meinel, Christoph
Abstract	Energy management has become a significant concern in data centers to reduce operational costs and maintain systems' reliability. Using virtualization allows server consolidation, which increases server utilization and reduces energy consumption by turning off unused servers. However, server consolidation and turning off servers can cause also consequences if they are not exploited efficiently. For instance, many researchers consider a deterministic demand for capacity planning, but the demand is always subject to uncertainty. This uncertainty is an outcome of the workload prediction and the workload fluctuation. This paper presents a robust optimization for proactive capacity planning. We do not presume that the demand of VMs is deterministic. Thus, we implement a range prediction approach instead of a single point prediction. Then, we implement a robust optimization model exploiting the range-based prediction to determine the number of active servers for each capacity planning period. The results of the simulation show that our approach can mitigate undesirable changes in the power-state of the servers. Additionally, the results indicate an increase in the servers' availability for hosting new VMs and reliability against a system failure during power-state changes. As future work, we intend to apply our approach to dynamic workload such as a web application. We plan to investigate applying our approach to other resources, where we consider only the CPU demand of VMs. Finally, we compare our approach against the approaches using stochastic optimization.
Starting Page	323
Ending Page	326
Page Count	4
File Format	PDF
ISBN	9781450316361
DOI	10.1145/2479871.2479917
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-04-21
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Robust optimization Energy-aware Prediction Virtualization
Content Type	Text
Resource Type	Article

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