Fast Reconstruction for Large Disk Enclosures Based on RAID2.0
Qiliang Li, Min Lyu, Liangliang Xu, Yinlong Xu, Wei Wang · 2021
In the era of explosive data growth, RAID2.0 architecture with dozens or even hundreds of disks is commonly used to provide large capacity data storage. Due to limited resources, such as memory and CPU, the reconstruction for disk failures in RAID2.0 is executed in batches. Traditional random data placement and recovery scheme make the I/O access highly skewed within a batch, which slows down the reconstruction speed.