# server off site zfs backup

* uses the `/root/zfs-send.sh` called from `/usr/local/etc/periodic/hourly/500.zfs-backup`
  * the script is quiet, unless it is run from a controlling terminal for diagnostic purposes
  * Uses the file `/var/db/backup/last-${backup_host}-${pool}` to determine which incremental backup to make
    * when not present, will do a full backup