I have a USB drive connected to my hg556a router from Vodafone (manual). I'm attempting a backup using FTP via wired ethernet -> router -> USB2.0.
On wireless it managed two simultaneous uploads at approximately 80kbps, so I am trying wired instead. Via a wired connection it can only do one transfer at a time (via wireless it was two - on wired the second attempt in FileZilla continually gets rejected by the router), and it's not much faster at about 120kbps.
Those speeds are not good enough for a network media/backup drive. I would expect the upload speed to be close to 1Mbps (limited by the ethernet connection).
What can I investigate to improve this upload connection speed, and get the second FTP connection working again via the wired connection?
I'm using Ubuntu on the uploading computer.