> ZFS scrubbing is designed to counter issues that crop up with bit flips caused by extremely unlikely hardware errors and things like cosmic rays - which are e

> ZFS scrubbing is designed to counter issues that crop up with bit flips caused by extremely unlikely hardware errors and things like cosmic rays - which are extremely rare, but when you have petabyte scale storage, they actually become plausible risks. It's not rare at all and you don't need petabytes to hit it in your home. I also doubt it's caused by cosmic rays. People seem to have this view that hardware is rock solid all the time. It isn't. Components fail.