Pi NAS for Remote Backup of My Main NAS?

I currently have a Synology NAS as my main NAS and I'm looking at remote backup solutions to try to minimize reliance on cloud services for less critical data. I'm considering a few options. An inexpensive NAS, e.g. ugreen DH2300 A second hand NAS Mini PC with external SSDs Raspberry Pi with external SSDs In any case, it would be set up off-site after the initial backup and would only be used to regularly backup the main NAS so it shouldn't need anything super high end. Is there an accepted best choice from these options? For what it's worth, I already have an extra Raspberry Pi laying around so that option would only require me to buy a couple SSDs and to take the time to set it all up. My main concern with this would be how reliable of a setup it would be. I don't expect it to be perfect but since it will be off-site, I don't want to be constantly having to troubleshoot the setup once the initial install is complete. submitted by /u/mh0520 [link] [comments]