Wuhan University Journal of Natural Sciences

, Volume 10, Issue 5, pp 838–842 | Cite as

A network-attached storage system supporting guaranteed QoS

  • Kong Hua-feng
  • Yu Sheng-sheng
  • Lu Hong-wei


We propose a network-attached storage system that can support guaranteed Quality of Service (QoS), called POPNet Storage. The special policy of date access and disk scheduling is enable users to access files quickly and directly with guaranteed QoS in the POPNet Storage. The POPNet Storage implements a measurement-based admission control algorithm (PSMBAC) to determine whether to admit a new data access request stream and admit as many requests as possible while meeting the QoS guarantees to its clients. The data reconstruction algorithms in the POPNet Storage also put more emphasis on data availability and guaranteed QoS, thus it is designed to complete the data recovery as soon as possible and at the same time provide the guaranteed QoS for high-priority data access. The experiment results show that the POP-Net Storage can provide more significant performance, reliability, and guaranteed QoS than conventional storage systems.

Key words

network-attached storage storage system QoS disk scheduling admission control 

CLC number

TP 333 


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Copyright information

© Springer 2005

Authors and Affiliations

  1. 1.School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan, HubeiChina

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