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Proceedings Paper

A new kind of storage hierarchy-volume holographic universal storage cache
Author(s): Dongjian Luo; Changsheng Xie; Dezhi Han; Jianzhong Huang; Chengfeng Zhang
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Paper Abstract

The access time of Disk/RAID has not been improved as fast as the memory performance whose rate of improvement has been 25% per year and hence the disk access penalty is considerably increasing with each enhancement in the memory architecture. To solve the problem, a new kind of storage hierarchy, Volume Holographic Universal Storage Cache (short for VHUSC) is proposed. VHUSC acts as a layer between main memory and disk or disk array. VHUSC can lower the disk access latency, provide much higher I/O bandwidth and throughput, it thus greatly improve the I/O performance of computer system. In this paper, an application independent model based on queuing theory is proposed for the VHUSC performance evaluation. Based on this model, VHUSC and traditional disk/RAID performance is analyzed and compared. Result shows that in most cases VHUSC can improve the disk read/write performance by 1 order of magnitude, especially when the hit rate is larger than 99%, the performance can reach 2 orders of magnitude.

Paper Details

Date Published: 20 January 2006
PDF: 7 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60272C (20 January 2006); doi: 10.1117/12.668207
Show Author Affiliations
Dongjian Luo, Huazhong Univ. of Science and Technology (China)
Changsheng Xie, Huazhong Univ. of Science and Technology (China)
Dezhi Han, Huazhong Univ. of Science and Technology (China)
Jianzhong Huang, Huazhong Univ. of Science and Technology (China)
Chengfeng Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing

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