I have two TrueNAS boxes and a Proxmox host (call them boxes A, B, and C). I want to get them to replicate ZFS snapshots to a third TrueNAS box (call it box D). However, I want it to be as locked down ...

Hold up, speed isn't the only factor in the NAS game.

[Michael Lynch] recently replaced his Synology NAS with a self-built solution built on ZFS, a filesystem with a neat feature: the ability to back up encrypted data without having to decrypt it first.

They each have their strengths, but Proxmox is far better for my use case ...