Availability and Fairness Support for Storage QoS Guarantee

14 years 1 months ago
Availability and Fairness Support for Storage QoS Guarantee
Multi-dimensional storage virtualization (MDSV) 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 measurementbased 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 isolati...
Gang Peng, Tzi-cker Chiueh
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Authors Gang Peng, Tzi-cker Chiueh
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