I have a NAS as my primary photo backup solution and one day someone will make a photo frame that I can point at it and it will just cycle through photos, but until that day, it's just a blackhole of memories. That said, that blackhole is important enough to me that I also back up online.
That said, given the new AI race, it's less safe than ever before and I'm seeking somewhere I can stick my photos and videos really cheaply and securely. Somewhere with pedigree that seems like it would be around in ten years. Also, someone with a modern design team so the app doesn't look like shit (preferably an open source Material You app targetting Android 14) and I can get notifications with daily memories.
If OP is attempting a 3-2-1 Backup scheme, this is an irrelevant argument.
OP wants to store a backup in a different physical location while trusting that it won't be used to train AI. They are looking for services that can satisfy that.
Not the OP, but I tried encrypting my files before uploading them to OneDrive. Microsoft did not liked that and was constantly bugging me regarding potential threats.
For the moment, lacking any better solution/knowledge, I put DIY encrypted cloud backups on hold (and went back to using iCloud which as far as I understand is encrypted, and as I'd rather not have MS nor Google constantly sniffing my personal files at all) but I will have a look at Hetzner offering. If it's doable for a non-geek like myself to configure a Storage Box for automated backups, I may decide to use that instead. Being EU-based makes it a + as far as I'm concerned.
So the plan as it currently stands is to do real time photo backups with Immich and then back that up to a hetzner storage plan. But it's just a plan for now since I haven't even installed Immich yet. But the thinking is that it's cheaper than Ente, which looks good and gives me more wiggle room.
I've used ente on a family plan for the last year and really like it. Although I have the aptitude to run a NAS, the last thing I want to do in my free time is look at a terminal. So for me, ente has been great - pretty plug and play.