Hi, I'm a relatively new and inexperienced ubuntu user.

I'm looking for advice regarding a backup scenario I would like to set up:

I have three different machines, all running ubuntu, all in different locations with different IP addresses (I'll call them servers: A,B, C) . Once a day, I would like to make a .tar file of a specific directory on each of these servers and upload that .tar file to a separate server (server D)though FTP. On server D, I only have permission to upload and download using ftw from a particular location.

Can anyone suggest a good tool that will enable me to do this with a short learning curb, as I am a new user.

Thank you very much