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2012 IEEE 20th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (2010)
Miami, Florida
Aug. 17, 2010 to Aug. 19, 2010
ISSN: 1526-7539
ISBN: 978-0-7695-4197-6
pp: 451-454
ABSTRACT
Data storage is an integral part of IT infrastructures, where Quality of Service (QoS) differentiation amongst customers and their applications is essential for many. Achieving this objective in a production environment is nontrivial, because these environments are complex and dynamic. Numerous practical and engineering constraints render the task even more challenging. This paper presents SLED-2, a QoS differentiation solution that meets these challenges in offering effective protection to the performance of important workloads at the expense of less important workloads when needed. SLED-2 uses a customized feedback heuristic that rate-limits selected I/O streams. This approach is unique in that it accounts for a number of important practical considerations, including fine-grained controls, errors in storage systems models, and inexpensive and safe QoS management. SLED-2 has been implemented for the IBM DS8000 series storage servers and shown to be highly effective in a set of hostile and practical scenarios using test facilities for IBM storage products.
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CITATION
Juan Ruiz, Joseph Hyde, Prashant Pandey, David Chambliss, William Shearman, Rui Zhang, Yan Xu, "Effective Quality of Service Differentiation for Real-world Storage Systems", 2012 IEEE 20th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems, vol. 00, no. , pp. 451-454, 2010, doi:10.1109/MASCOTS.2010.63
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