Accelerated File Transfer – Extreme Speeds Ahead
There are some delivery protocols now being incorporated into MFT solutions, which will significantly increase the speed of transmission. Unfortunately, there are no open standard protocols for
Software vendors have largely looked to resolve the fast file transfer problem using two differing approaches. File transfer protocol development has either been multi-threaded TCP streams or an expansion of the open source UDP/UDT projects.
Transmission Control Protocol (TCP)
TCP is the underlying network communication protocol used in all standard MFT protocols. Fundamentally, a file or message is
With poor quality networks, it is possible for the original packet to be received intact but the acknowledgement packet to be either corrupted or lost in transmission. This would cause the whole packet to be resent unnecessarily, having an impact on transmission times. In addition, the way FTP works to send files, not all bandwidth is used up early in the cycle, and the rate of transmission is dictated by how much data gets through until failures start to occur.
User Datagram Protocol (UDP)
UDP based fast transfer protocols are becoming more common with at least three major vendors incorporating them into their MFT solutions. These work in a similar way to traditional TCP based transfers, but do not rely on the acknowledgement packet to be received, they assume that the packet arrived
The UDP based transfers are much more efficient over long distances and poor quality networks. For example, some of the major internet video services, such as Netflix or LoveFilm, embed them into their software to deliver video to customers’ homes effectively.
A little bit of testing…
During software evaluation testing we moved GBs of data from one Amazon data centre in the US to one in
Even with all these considerations, we found both methods improved speed of transfers by a significant amount. A “raw” FTP transfer took 10 minutes to move a file from a domestic broadband connection, whereas the accelerated protocols took between 7 and 8 minutes.
At the moment, it is too early to say if one protocol or solution will win out over the others, but the trend seems to be that UDP based products are slightly faster and therefore being more widely adopted by Managed File Transfer software vendors. A lot may depend on whether any vendor opens up their protocol to be incorporated into other applications.