Spent the day testing ZFS, via FreeNAS, as a VM storage medium.  Got it to do snapshots, rollbacks, clones and the most important, incremental backup to remote systems.

The goal is for this to allow my core data to be replicated to remote repos for security issues.  This is most imperative after Irmaria.

Resources that were most helpful.

https://www.headdesk.me/ZFS_incremental_replication

http://portrix-systems.de/blog/brost/zfs-migration-using-incremental-sendreceive/