High performance RAID system by using dual head disk structure

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Abstract

An approach for designing high performance disk array systems by using dual head disk structure is presented. In general, both I/O bandwidth and the reliability can be significantly improved by using disk array systems, i.e., RAID. However, the performance of RAID systems can be significantly degraded for the application environment that small read/write accesses are frequently requested. Thus, dual head disk is applied to improve the performance of RAID systems. Dual head disk model can reduce not only the maximum seek time but also the average seek time by dividing the disk surface into two separated regions, one for each head. To compare the performance of the dual head RAID(DH-RAID) system with the conventional RAID systems, simulations are performed with two types of RAID configurations and several workloads. Simulation results show higher performance can be obtained by DH-RAID systems as compared with the conventional RAID systems. DH-RAID model can provide better performance in the application environment that has relatively high seek time ratio.

Original languageEnglish
Pages325-330
Number of pages6
Publication statusPublished - 1997 Jan 1
EventProceedings of the 1997 2nd High Performance Computing on the Information Superhighway, HPC Asia'97 - Seoul, South Korea
Duration: 1997 Apr 281997 May 2

Other

OtherProceedings of the 1997 2nd High Performance Computing on the Information Superhighway, HPC Asia'97
CitySeoul, South Korea
Period97/4/2897/5/2

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All Science Journal Classification (ASJC) codes

  • Computer Science(all)

Cite this

Lee, N. K., Han, T. D., Kim, S. D., & Yang, S. B. (1997). High performance RAID system by using dual head disk structure. 325-330. Paper presented at Proceedings of the 1997 2nd High Performance Computing on the Information Superhighway, HPC Asia'97, Seoul, South Korea, .