Using a linux NAS to daily backup of my ispconfig server with Rsync

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I want to keep notes on how i manage to make this simple backup works.
Basically i have this 1TB NAS running optware and i want to use it to get a fresh backup each day of the last week and one day for each past month.
The idea is to use rsync over ssh, so the first thing to do is to log in into...
Using a linux NAS to daily backup of my ispconfig server with Rsync