URE during RAID 1 or RAID 10 rebuild

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I'm familiar with the often discussed scenario where a RAID 5 array has a URE (unrecoverable read error) during a rebuild and therefore kills the array.

What about RAID 1 or RAID 10? I've heard that since these are mirrors, a URE during a rebuild will rot the affected bit but not kill the array. Is this true?

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