Hi,

 

I still consider myself a newbie but I hope this is possible.

I have a old qnap nas that I don't use anymore as it just got too slow but I am hoping to reuse it as a backup if my qnap to take weakly backups,

 

Is this possible?

It is. There are several ways to do that.

You can mount a remote share from your nas as an Unassinged Device in Unraid and start from there.

Then u can use a script or a docker app.

I myself use Syncthing (with file versioning) to make backups but there are other good docker images.