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Improving quality-of-service of file migration policies in high-performance servers

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2 Author(s)
Pettis, N. ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN ; Yung-Hsiang Lu

Previous work demonstrates that migrating files between disks may induce idleness in servers and facilitate power management. However, these studies focus on steady-state power savings and do not consider the energy consumption and performance overhead of migrating files between disks. In this study, we construct a constrained optimization problem of file location for high-bandwidth applications by considering file migration energy, as well as steady-state energy consumption. We present an algorithm that improves quality-of-service by 63% for a streaming video server compared with existing techniques while maintaining comparable energy saving.

Published in:

Parallel and Distributed Systems, 2007 International Conference on  (Volume:2 )

Date of Conference:

5-7 Dec. 2007