Use Syncoid!

root@hotspare:~# zfs list rust/shares

NAME USED AVAIL REFER MOUNTPOINT

rust/shares 2.56T 150G 144K /rust/shares

root@hotspare:~# syncoid root@prod:rust/shares rust/shares

Sending incremental rust/shares@syncoid_wts-hotspare0_2016-10-25:12:10:19 ... syncoid_hotspare_2016-10-25:12:42:37 (~ 41.2 MB):

38.6MB 0:00:02 [ 17MB/s] [====================> ] 93%