The point about the CRC being only slightly off is that usually a change in the data-set produces a much larger variation. It could be only a single bit or two near the end. The point about stress-testing the CPU/RAM is to validate that those are known clean in as close to a high-temp real load environment as possible. That would then point to corruption on the cables or drives. Which you can diagnose more easily individually instead of as part of an array. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html