FreeFileSync 一款开源的文件同步软件

FreeFileSync 用户手册:

Volume Shadow Copy (Windows only)

FreeFileSync supports copying locked or shared files by creating a Volume Shadow Copy of the source drive. This feature can be configured via Menu → Tools → Options: Copy locked files.

Note
  • The volume snapshot created by the Volume Shadow Copy Service is only used for copying files that are actually locked.
  • Accessing the Volume Shadow Copy Service requires FreeFileSync to be started with administrator rights.