Title :
An area-efficient architecture of Reed-Solomon codec for advanced RAID systems
Author :
Song, Min An ; Lan, I-Feng ; Kuo, Sy-Yen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
In this paper, a simple codec algorithm based on Reed-Solomon (RS) codes is proposed for erasure correcting in RAID level 6 systems. Unlike conventional RS codes, here this scheme with a mathematical reduction method, called reduced static-checksum table approach, could improve coding performance. We used Reed Solomon codes which are designed according to characteristics of advanced RAID systems to handle two disk failures in RAID system. Also, this scheme performs all computations with only simple exclusive-OR (XOR) operators just the same as even-odd codes. This new XOR-based RS codes could adapt to implementation in terms of improving reliability and flexibility.
Keywords :
RAID; Reed-Solomon codes; codecs; error correction codes; RAID level 6 systems; Reed-Solomon codec; advanced RAID systems; erasure correcting; mathematical reduction; reduced static-checksum table; Codecs; Control systems; Costs; Decoding; Encoding; Equations; Error correction; File systems; Hazards; Reed-Solomon codes;
Conference_Titel :
Parallel and Distributed Systems, 2005. Proceedings. 11th International Conference on
Print_ISBN :
0-7695-2281-5
DOI :
10.1109/ICPADS.2005.76
