FreeFileSync Open Source File Synchronization

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FreeFileSync User Manual:
#Quick Start Command Line Comparison Settings Daylight Saving Time Exclude Files Expert Settings External Applications Macros Performance RealTimeSync RTS: Run as Service Schedule Batch Jobs Synchronization Settings (S)FTP Setup Tips and Tricks Variable Drive Letters Versioning Volume Shadow Copy

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.