I've never gotten to hear one fail, but these were the way I learned never to use drives from a single batch in a RAID array back in the day (most of the time these days I never match models in a single array and try to avoid matching manufacturers; gotten paranoid over the years after successive RAID failures)

Thankfully it was just stressful - we had backups, but drives in our array started failing one by one, with about a weeks interval; unfortunately it took something like 4 days to rebuild the array each time, so we wasted a lot of time shifting writes elsewhere so the last backup we had + writes going elsewhere combined remained recent enough in case a second drive would fail. We got off easy, but the time we spent probably cost us more than having set up a more redundant system in the first time would have.