File synchronization with preview is very useful providing the user with a clear picture about what files will be synchronized. On the other hand, file synchronization with preview may be ineffective or completely inappropriate when there is a need to synchronize large directories or whole disks containing many thousands of files, especially due to the fact that none will have the time to review lists of file synchronization actions containing thousands of items.

SyncBreeze Pro provides an additional file synchronization mode, named the stream file synchronization mode, which performs file synchronization on-the-fly without showing the preview dialog. The stream file synchronization more is especially designed for file systems containing huge amounts of files and is capable of synchronizing large directories, disks and NAS storage devices very fast and effectively. Finally, the stream file synchronization mode is ideal for automated, periodic file synchronization operations performed in the background without any user intervention.