RAID reconstruction method and device

The embodiment of the invention provides an RAID reconstruction method and device, and relates to the technical field of data storage. The reconstruction method is applied to the RAID drive. The method comprises the following steps: determining a target hard disk, wherein the target hard disk is used for reconstructing a target RAID; traversing each metadata stored in a file system to which the target RAID belongs, and when each metadata is traversed, determining whether a target data file corresponding to the metadata is a valid file; if yes, reconstructing target data to be stored in the target hard disk according to specified data stored in each initial hard disk; and storing the target data into the target hard disk. Compared with the prior art, by applying the scheme provided by the embodiment of the invention, on the premise of ensuring the integrity of the data stored in the RAID and the data security of the RAID and improving the security level of the RAID, the RAID after the hard disk with the read-w