I hope this saves someone as much time and trouble as it did for me....
Linux servers only, Windows users will have to find an alternate way.
I had about 100G of video files that needed to be moved from one server to another. I didn't want to download them all and then re-upload them to the new server, as that would have taken about a week.
I used SSH to copy the files directly from server to server at full network speed (100Mb or better) and it worked like a charm. It transferred 100G of files in about 10 minutes. Log into the target or destination box (where the files will come to) and run the following command.
Here's the syntax (from the SSH command line):
scp user@host:directory/SourceFile TargetFile
Example:
scp -r
someuser@actual.servername.net:/path/to/destination/
(a password prompt for the sending server will appear when you run this)