NDLI: Availability and Fairness Support for Storage QoS Guarantee

Content Provider	IEEE Xplore Digital Library
Author	Peng Gang Tzi-cker Chiueh
Copyright Year	2008
Description	Author affiliation: Comput. Sci. Dept., Stony Brook Univ., Stony Brook, NY (Peng Gang; Tzi-cker Chiueh)
Abstract	Multi-dimensional storage virtualization (MDSV) technology allows multiple virtual disks, each with a distinct combination of capacity, latency and bandwidth requirements, to be multiplexed on a physical disk storage system with performance isolation. This paper presents novel design and implementation techniques that solve the availability guarantee and fairness assurance problems in multi-dimensional storage virtualization. First, we show that a measurement-based admission control algorithm can reduce the effective resource requirement of a virtual disk with availability guarantee by accurately estimating its resource needs without prior knowledge of its input workload characteristics. Moreover, to accurately factor disk access overhead into real-time disk request scheduling algorithm, we propose a virtual disk switching overhead extraction and distribution algorithm that can derive the intrinsic disk access overhead associated with each virtual disk so as to achieve perfect performance isolation. Finally, we develop an adaptive server time leap-forward algorithm to effectively address the short-term unfairness problem of virtual clock-based disk scheduler, the only known proportional-share scheduler that is based on wall-clock time and thus enables disk utilization efficiency optimization while delivering disk QoS guarantees.
Starting Page	589
Ending Page	596
File Size	282150
Page Count	8
File Format	PDF
ISBN	9780769531724
ISSN	10636927
DOI	10.1109/ICDCS.2008.107
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quality of service Switches Servers Arrays Availability Bandwidth Scheduling algorithm dual-queue disk scheduling storage virtualization disk QoS virtual disk switching overhead virtual clock
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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