ZFS - Replication Backups

I recently rebuilt my lab NAS hosts with Ubuntu 16.04 and used ZFS for the storage pools (once again). In doing it this time around I wanted to get a good method of leveraging ZFS snapshots and replicating them for my backups. I ended up coming up with the following script that has been working out quite well so far. As usual, I figured it might be worthwhile to share this for others to leverage as well.

Enjoy!