Comment by RIMR

The only thing on my phone that really ever needs to be backed up is my pictures, videos, and audio recordings. I use Owlfiles to automatically back all that up to my NAS via Tailscale for fast secure connectivity to my home network. Everything else is Nextcloud on the same system. All of that data gets backed up daily to Backblaze B2, and once per month I write everything to an LTO-6 tape that I swap out between 3 tapes: One in my bank deposit box, two in my firesafe.

Backblaze costs me about $100/year for the ~2TB of data I store there.

I got my LTO-6 drive for free from my employer after we upgraded to LTO-8.

I got a 20-pack of new LTO-6 tapes from eBay for $100, and have no idea what to do with the remaining 42.5TB of space. I guess after several years of rotating my existing tapes, I should start using new ones.