Hi, I recently posted a question to find out how to tell what is sda, b, c, etc... and I am now using smartctl to get the serial numbers and all is really great. Thanks everyone for that info! Another puzzle is with raid10, there are 2 used in a stripe, then that stripe is mirrored with the other 2. My question is how can I tell "what 2 disks can fail?" In other words, how can I tell for example if sda and b are stiped? and that c and d are a mirror of a and b? How can I see what is happening with that? Is there a way to tell? Thanks Rick -- 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