[esikich]

How often are you testing those backups? What kind of monitoring do you have? Do you pay attention to it? Skip any of those and it's just a prayer.

[nubinetwork]

They're zfs snapshots, assuming you're actually taking them, a send/recv shouldn't cause any problems... (ignoring the hole_birth and encryption bugs from the 0.6.x days - to my knowledge, they should both be resolved by now)

[stavros]

Every day, healthchecks.io, yes.