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these kinds of problems may cause the array to fail, but won't necessarily lose data, right? If you have a ZFS pool and a faulty controller causes the pool to fail, ie. "losing" three disks in a raidz2 vdev, my guess is that you would just replace the faulty card and reimport the pool and chances are things would be OK... no?

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ZFS can mostly handle that. It will try to recover any data it can, and rebuild whatever it can. Due to how paranoid ZFS is designed, it will survive edge cases like this much better, which is also why I like deploying it here even at home.

And if it can't recover it? You can prove it by failed checksum check. This is why, in my opinion, ZFS is so much better than all other file systems: if it fails, you can prove it instead of just sorta vaguely questioning everything because you can't tell but you suspect it, and it slowly drives you insane.

Once you try ZFS, you never go back.

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