Application and Performance Analysis of EVENODD in RAID Architecture
Weiji Tao · Highlights in Science Engineering and Technology · 2024
As storage systems are developed and used in different environments, people require more stable and reliable storage systems. As one of the main methods of storage system fault tolerance, EVENODD has received more and more attention. Compared with the traditional RS coding, EVENODD is completely based on the XOR operation, which is very important in the research of erasure correction. Firstly, the paper introduces the RAID architecture and the current typical and common erasure codes. Then, the possible prospects for using EVENODD and the coding implementation are described in detail. Besides, the paper compares the existing erasure codes from the perspective of encoding and decoding speed. Through the comparison and analysis, it is concluded that EVENODD has different degrees of defects in terms of fault tolerance and computational efficiency. How to improve the design of erasure codes with higher fault tolerance and computational efficiency based on EVENODD is an issue that deserves further research in the future.