Comment by StrangeWill

The only hangup with the myth "debunking" is that the point is that the corruption doesn't happen to a per-disk buffer, but to the in-flight data before it's persisted to your stripe.

Which means all copies of the data will be corrupted. This can be anything from an irrecoverable file to complete filesystem corruption.

But generally, yeah, not any more dangerous than any other filesystem, and ECC used to be cheap so it was a no-brainer, you should have backups anyway TBH if we're being honest about storage resiliency.

What has been debunked is the "scrub of death" issue, on a scrub a bad bit flip would cause an error, which would be copied over with good data -- well it was technically good before. It would be statistically difficult to have a fault on a read, then a clean read, then a second bit flip destroying the data.