Snapshot background synchronization method and device, electronic equipment and storage medium

The invention provides a snapshot background synchronization method and device, electronic equipment and a storage medium, and belongs to the technical field of computers.The snapshot background synchronization method comprises the steps that source volume data is divided into N data parts; wherein N is a natural number greater than 1; the N data parts are distributed to N controllers of the multi-control storage system in a balanced mode, so that each controller is responsible for synchronization of at least one data part; and synchronizing the data part in charge of each controller to the target volume in a background copying mode. According to the method, controller resources of the multi-control storage system are fully utilized, and the speed of snapshot background synchronization is increased. 本发明提供一种快照后台同步方法、装置、电子设备和存储介质，属于计算机技术领域，其中，快照后台同步方法包括：将源卷数据划分成N个数据部分；其中，N为大于1的自然数；将N个数据部分均衡分配给多控存储系统的N个控制器，以使得每个控制器负责至少一个数据部分的同步；将每个控制器所负责的数据部分通过后台拷贝方式同步至目标卷。本发明充分利用了多控存储系统的控制器资源，提高了快照后台同步的速度。