Right now, I have around 20TB of data in redundant ZFS mirrors, so I am somewhat protected against any single drive failing. Critical data is backed up at various cloud providers, but that’s only a few gigs of all my data.
Looking at S3 pricing, It seems rather unfeasible to back up my data there or on the other “big” cloud providers, as it would cost me around $180 with AWS or half of that with backblaze.
How and where do you guys back up your data?
I can imagine a containerized service that only runs, say, ssh which only runs a forcedcommand, like https://borgbackup.readthedocs.io/en/stable/usage/serve.html
And set up the container with the storage-opt option to limit space usage. It would make it harder to misuse the space or cpu, or break out into the hosting server.
You could go one step further and set up something like a tailscale/headscale network and only allow access over that, and limit the acls on the tailnet to only the ssh port. That should shield it from the Internet at large and also apple am absolute minimum of access to the other side.
I wonder if you could run the tailscale client within the container? Having it all together would make it actually usable.
I’m also looking at some of the distributed file systems out there, if one supports “m of n” connections to get the data, you could possibly use that to have the encrypted backups stored on multiple machines at once with more resilience.
Tbh the idea does sound interesting, especially if there’s a way to do Shamir’s secret sharing on top of the encrypted snapshot or something. Cause I’m not too worried with exposing my stuff to the internet, as I at least partially do that for a living, but rather make sure I do not existentially send all my family’s documents in plaintext to some stranger on the internet.