Backup mirror image data management method and device, system and storage medium

The invention belongs to the technical field of backup restoration and data management. The embodiment of the invention specifically discloses a backup mirror data management method, device and system and a storage medium. According to the backup mirror data management method provided by the invention, the source data to be backed up is separated from the data storage position, only the corresponding data block global number is needed when the source data is restored, the storage position of the source data is obtained after the data block global number is calculated, and when the storage position of the source data is changed, only the data table needs to be locally modified, the source data are not influenced, and the backup data are effectively and conveniently organized. 本发明属于备份还原和数据管理技术领域，实施例具体公开一种备份镜像数据的管理方法、装置、系统及存储介质。本申请提供的备份镜像数据的管理方法，将要备份的源数据和数据存储位置分离，在还原源数据时只需要对应的数据块全局编号，由数据块全局编号经过计算后得到源数据的存储位置，并且在更改源数据存储位置时，只需要对数据表进行局部修改，对源数据不影响，实现了有效和便利的组织备份数据。