Hi all, I'm still very much on a steep learning curve about what I can do with Linux software RAID. In another thread this weekend a couple of responders discussed among themselves 3-disk RAID1 solutions that can survive if 2 disks die. I don't understand what that means. Can someone point me at a quick explanation? Is that really possible? In general I'm using a few Wikipedia pages and gravitate toward the diagrams as much as anything. http://en.wikipedia.org/wiki/RAID http://en.wikipedia.org/wiki/RAID1#RAID_1 RAID0 - striping, speed not reliability (2 disk minimum) RAID1 - duplicate data, no other protection (2 disk minimum) How do I build RAID1 using three drives? Just duplicate the data 3 times? If drives start going bad how do I determine which one or two are failing? (fsck? SMART?) With 3 drives 1 fail seems relatively straightforward to figure out, but 2? Thanks, Mark -- 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