This looks amazing. I am planning on setting up navidrone soon and will certainly check this out!

I like restic, it’ll do deduplication and compression, it can backup to s3 or ssh or locally.

I just bought this one https://www.newegg.com/rosewill-rsv-z2600u-black/p/N82E16811147329?item=N82E16811147329

You’re trying to route nebula thru another VPN? That sounds like trouble… Can you not do that?

Maybe not what you’re looking for, but maybe its time to switch to a mesh style VPN, and use your DO VPS’ as coordinator nodes, so they don’t route all that traffic. Tailscale, head scale, netbird, nebula are all options.