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Proceedings Paper

Research on bottlenecks of RAID controller hardware
Author(s): Zhihu Tan; Jie Chen; Huaixiang Hu
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Paper Abstract

RAID systems provide both improved capacity and performance as compared to single disk by striping data to multiple disks, and improve reliability efficiently by redundancy techniques, now RAID becomes key storage device for massive storage system. There are two ways to implement the RAID system: the first is to implement as a software subsystem under PC platform, the second is to implement as a hardware controller. The second one is more common. We have designed and implemented a RAID hardware controller, which called DSDM-FC2000. This paper discusses three kinds of bottlenecks of the DSDM-FC2000 RAID hardware controller: PCI transmission bottleneck, memory access bottleneck and CPU computation bottleneck, and then presents an optimized hardware XOR algorithm which can improve the RAID performance efficiently. Finally this paper gives some advises on designing new generation RAID controller hardware.

Paper Details

Date Published: 19 March 2009
PDF: 8 pages
Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 71251P (19 March 2009); doi: 10.1117/12.822493
Show Author Affiliations
Zhihu Tan, Wuhan National Lab. for Optoelectronics, Huazhong Univ. of Science and Technology (China)
Jie Chen, Wuhan National Lab. for Optoelectronics, Huazhong Univ. of Science and Technology (China)
Huaixiang Hu, China Electronics Technology Group Corp. (China)


Published in SPIE Proceedings Vol. 7125:
Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage
Fuxi Gan, Editor(s)

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