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Alternative to Google Photos
(lemmy.blahaj.zone)
If it's free and open source and it's also software, it can be discussed here. Subcommunity of Technology.
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I'm sorry for my rec since I'm not sure if it fits your needs or spec, but I use SyncThing which seems to support everything?
I'm also not sure since I don't use it, but you could theoretically get a tasker or automator setup to force SyncThing on Wi-Fi to your backup server and another/same one to delete them monthly/based on storage space?
It's not an all in one, as I don't believe SyncThing does transfers but makes copies? Unsure, this seems like it may be an option for you!
Bonus: if you have any kind of music collection that you like digitally, it makes it very easy to have an automated library :)
It can definitely work! I use syncthing for my notes, music, photos, config files, and more, it's a lifesaver. I make sure all of my files make it to my desktop and keep it backed up.