Institute of Electrical & Electronic Engineers
The RAID-6 architecture is playing an increasingly important role in modern storage systems. There are generally two kinds of RAID-6 codes, horizontal codes and vertical codes. Horizontal codes have been extensively studied and widely implemented, while vertical codes have not gained the equal attention. In this paper, the authors investigate the state-of-the-art horizontal and vertical RAID-6 codes and select two representative ones, RDP for horizontal codes and P-Code for vertical codes, to compare their performance.