> Are you scrubbing once a month? If not this will happen again. Linus Media lost 100’s of TB that way.

Anybody running 100 TB+ ZFS arrays should really have been aware of this class of problem before deploying (and doubly so if using consumer drives). ZFS protects from bitrot and hardware failures... but it's not magic. If data is written once and not read again for a long time, you won't know it's been sitting on bad sectors until it's too late, and you may end up with multiple failing drives at once if you lose a disk and try to resilver. Far better to check periodically so you can throw bad disks early.

Hopefully they had a good backup strategy!