Hi.. I use a headless ubuntu 12.04 server, and it works like a charm. But I have some questions regarding a backup..

I backup the user files daily and make a full backup weekly using tar and crontab. But the backup process relais on yours truly to change removable hardware to ensure success.. Therefore I would like to move the weekly (incremental) backup to ubuntu one..

My questions are:
1. Is it possible to backup to ubuntu one from a headless server?
2. Has anyone got some experience with backing up to ubuntu one from a headless server?
3. Is it possible to set up a cron job to automate that process, and how do I do that?

I found how to set up ubuntu one from a headless server (found it here), so thats covered..