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...

• Type: Conference
• Year: 2008
• Where: ICDCS
• Authors: Gang Peng, Tzi-cker Chiueh
• Keywords: Disk Access, Distributed And Parallel Computing, ICDCS 2008, Multi-dimensional Storage Virtualization, Virtual Disk