Aspera user here (Well I used to, before it was bought by IBM) Its only faster over large high latency links. Instead of using a single TCP stream to push data

Aspera user here (Well I used to, before it was bought by IBM) Its only faster over large high latency links. Instead of using a single TCP stream to push data (with that exponential roll off) it has a TCP session to do accounting, and a bunch of UDP ports to stream the data. for links around 16ms latency, its not that much faster. For a 10 gig link with a latency of 100ms, it runs pretty much at wire speed. (assuming you have a machine that can handle it.)