Backup based control panels?
Ok, so the providers out there who have dedicated backup boxes, meant to sell shared, protected backup space to their dedicated/colocated users, etc.: What software are you guys running, how do you find it, etc?
Currently we have a few servers running the basics (RSYNC, SSH, FTP, etc.), however no panel for the users. I tossed up FreeNAS on a about to be provisioned backup box to see how it looked, but was disappointed when I realized the panel was admin only (when the admins should really have the least need for a panel).
Has anybody run across a free/cost effective solution that's geared specifically for file storage?
I know CPanel is pushing R1soft product, there's bacula4hosts, etc. but I haven't spotted anything that charges you per backup-host, as opposed to per connecting server (so the guy who just wants a 10GB account for his configs can have it, etc.).
Also, most of the software I ran across want to install agents on the source server, while I expect most customers would be happier having the data extracted without (IE: by remote SSH/RSYNC/etc.).
Suggestions? :)