Quick reconstructing method and device of RAID5 disk packs

The invention provides a quick reconstructing method and device of RAID5 disk packs. According to the technical scheme, the method comprises the steps of using 2N disks to construct two RAID5 disk packs, and configuring a heat standby disk for each RAID5 disk pack; storing data of the disk packs into 2N disks, and when any disk breaks down, using data in the heat standby disks of the RAID5 disk packs and redundant (2N-1) disks to recover the data in the breakdown disk. Since the two heat standby disks can be utilized to conduct parallel recovery on the data in the breakdown disk in the data recovery process, the reconstructing speed of the RAID5 can be obviously increased. 本发明提供了种RAID5磁盘组快速重建方法和装置，技术方案为：使用2N个磁盘构建两个RAID5磁盘组并为每个RAID5磁盘组配置个热备磁盘；将两个磁盘组的数据存储的2N个磁盘中，当有任何个磁盘故障时，利用两个RAID5磁盘组的热备磁盘和剩余2N-1个磁盘中的数据实现故障磁盘中数据的恢复。由于在数据恢复过程中可以使用两个热备磁盘对故障磁盘中的数据进行并行恢复，因此应用本发明可以显著加快RAID5的重建速度。