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Home > Success Center > Serv-U Managed File Transfer & Serv-U FTP Server > Bandwidth throttling or transfer rate in FTP Voyager

Bandwidth throttling or transfer rate in FTP Voyager

Updated May 2, 2017


FTP Voyager supports bandwidth throttles which let users control how much of a computer's internet connection FTP Voyager can use in order to upload or download files.


All Serv-U versions


The throttle settings are available at the global level:

  1. Go to Tools, then Options or Scheduler Options.
  2. Go to the main Connection node, Go to the Transfer Rate section under the main Connection node.

These may be used to separately enable or disable limits on uploads and downloads, and to set the limit placed in each direction.

FTP Client Transfer Rate


FTP Voyager and previous versions

This option can be set through the following and is not set by default:

  • Global: Go to View > Options > File Transfer.
  • Individual site profiles: Go to Advanced > File Transfer.
File Transfer Options Window

Technical application

For FTP Voyager 16 and later versions, the bandwidth limitations are applied to all active transfers. For example, if two transfers have been initiated, and the bandwidth usage is limited to 500 KB/sec, FTP Voyager will throttle full-speed transfers to around 250 KB/sec each, or might throttle one transfer to 400 KB/sec if the other transfer is only using 100 KB/sec at full speed (for example, when connected to a slow server).

For earlier versions, the bandwidth limitations were applied individually to each active transfer. (previous versions called multiple transfers as Power Transfers). For example, if two transfers were initiated in FTP Voyager 15 and the bandwidth usage was limited to 100 KB/sec, FTP Voyager would have used 200 KB/sec total, or 100 KB/sec for each transfer.


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