If you’re downloading large files and experiencing issues with file fragmentation, you can turn on pre-allocation. FileZilla/FileZilla Pro will find contiguous disk space for each file and create a placeholder file to keep it available.
To enable pre-allocation:
- In the main menu, click on Edit > Settings….
- Select Transfers from the menu on the left.
- Tick the Preallocate space before downloading checkbox.
- Click on OK.