On Tuesday January 4, ptb@xxxxxxxxxxxxxx wrote: > Bits flip on our client disks all the time :(. You seem to be alone in reporting this. I certainly have never experienced anything quite like what you seem to be reporting. Certainly there are reports of flipped bits in memory. If you have non-ecc memory, then this is a real risk and when it happens you replace the memory. Usually it happens with a sufficiently high frequency that the computer is effectively unusable. But bits being flipped on disk, without the drive reporting an error, and without the filesystem very quickly becoming unusable, is (except for your report) unheard of. md/raid would definitely not help that sort of situation at all. NeilBrown - 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