Research on bottlenecks of RAID controller hardware

Zhihu Tan; Jie Chen; Huaixiang Hu

doi:10.1117/12.822493

19 March 2009 Research on bottlenecks of RAID controller hardware

Zhihu Tan, Jie Chen, Huaixiang Hu

Proceedings Volume 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage; 71251P (2009) https://doi.org/10.1117/12.822493
Event: Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 2008, Wuhan, China

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.

Citation Download Citation

Zhihu Tan, Jie Chen, and Huaixiang Hu "Research on bottlenecks of RAID controller hardware", Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 71251P (19 March 2009); https://doi.org/10.1117/12.822493

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