I'm planning in creating a backup storage, via
rsync and SSH for all machines at home, using my new router that has an USB port (It's a TP-Link Tl-WR1043ND). I'm not planning to create a full-blown NAS storage: it's just backup. I would do a big first backup for each machine, possibly with disabled internet and disabled Wi-Fi (use a gigabit LAN for this first backup) to avoid CPU usage in the first place, then rsync is going to be used.
Has anyone here tried this approach? Is it feasible? Creating a different user on the box to connect by SSH just for this?