Speeding up large transfers (multipart transfers) (WS_FTP Professional)

Large files, such as an architect’s blueprint or a software executable, can take longer to transfer. If you regularly transfer large files, you can use Multipart mode to speed up the transfer.

When in Multipart mode, WS_FTP splits large files into smaller segments, and downloads all segments via different, yet concurrent, connections. This decreases the total download time for large individual files.

The number of connections that WS_FTP uses is determined by:

  • the number of additional connections specified in the Site Options: Transfer dialog
  • the number of connections allowed by the server

The Transfer Manager displays the file, the number of segments that the file has been divided into, and the status of the transfer of each of the segments. When each of the segments are complete, the Transfer Manager shows the status of re-combining the segments into one file, if that process takes longer than 2 seconds.

If there are no segments listed under the file being downloaded, then the file is not large enough to be divided.

Note: Multipart works with download files only. It does not work with SSH connections. Also, the server must support multiple connections for Multipart mode to work.