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A comment on Don’t Be Afraid of RAID. Parent comment

Re:Don’t Be Afraid of RAID by louwrentius on Sunday May 24, 2020 @12:47PM (#23292734)
No, my array was fine and all drives were fine, except that one drive that was affected by a lot of bad sectors.

The scrub did exactly what it was supposed to do. Because the drive seemed fine but it was not. It would have killed my array if any of the other drives would have failed.

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Re:Don’t Be Afraid of RAID by number6 on Sunday May 24, 2020 @02:15PM (#23293390)
This sounds to me like: "It was really one inch away from losing all the data"

You discovered the failing disk by chance; if chance hadn't been in your favour it would be the other way round and an other drive had failed on you.

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Re:Don’t Be Afraid of RAID by louwrentius on Sunday May 24, 2020 @02:32PM (#23293516)
No, I think you misunderstand: read about the scrubs, they run weekly or monthly. Nothing accidental about that.

I keep my server off most of the time. And that is a nice way of missing scrubs. In my case the scrub did what it needs to do: find disks with bad sectors. I should do something extra in the future to run scrubs if they miss their schedule.

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