Turn backup-zfs into a two-step process:
1. Send snapshots to a server over SSH
2. Receive those snapshots over SSH
Supports a disconnected backup environment where the backup storage host
and the system being backed up don't have to be online at the same time.
Use case: Send snapshots from my home server to my work server while I'm
asleep, then read them over the LAN from my work server to my external
drive while I'm at work.
Kevin McCormick