Disk array, data reconstruction method based on disk array and storage device

The invention provides a disk array, data reconstruction method based on the disk array and a storage device. The disk array includes a plurality of physical disks, the storage space of each physical disk includes a plurality of physical blocks, and each physical block is provided with a physical address; the physical blocks of each physical disk include backup physical blocks and storing physical blocks, and the backup physical blocks are distributed in the storing physical blocks at intervals. By the adoption of the disk array, after data reconstruction, the influence on the reading and writing performance of RAID is reduced, and accordingly the reading and writing performance of the whole RAID is improved. 本发明提供种磁盘阵列及基于其的数据重构方法和存储设备，该磁盘阵列包括：多个物理磁盘，每个物理磁盘的存储空间包括多个物理块，每个物理块具有物理地址；每个物理磁盘的多个物理块包括备份物理块和存储物理块，且备份物理块间隔分布于存储物理块中。采用本方案的磁盘阵列，对数据重构之后对RAID读写性能的影响会减小，进而提高整个RAID的读写性能。