Off-site Backups from NixOS to Hetzner Storage Box with Restic

I run a small NAS at home built on NixOS and ZFS. While ZFS gives me local redundancy and snapshots, I wanted true off-site protection in case of disasters like fire, theft, or hardware failure. After evaluating a few options, I settled on Hetzner’s Storage Box: it’s affordable, reliable, and supports SFTP out of the box. Using Restic for encrypted, deduplicated backups seemed like the perfect match.