> Also it's pretty much impossible to grow a zfs pool and there are no consistency check tools or repair tools. So when you actually do get corruption, you lose

> Also it's pretty much impossible to grow a zfs pool and there are no consistency check tools or repair tools. So when you actually do get corruption, you lose it all. `zpool scrub` is the consistency check and repair tool. It's happy to detect and repair everything from bit flips to realtime `dd if=/dev/random of=/dev/ada0` of a mirrored/raid-z disk. Growing a single vdev can be impractical especially for raid-z. Adding new vdevs to a pool is straightforward.