I've tried to google, but its not being my friend as I may be using the incorrect terms. What I'm trying to find out is if I can create a raid10 with six/6 drives but with a triple mirror where there are only 2 mirrors containing 3 drives a piece. Basically <-------- raid 0 ---------> <- raid 1 -> <- raid 1 -> M1 M1 M1 M2 M2 M2 I guess I could manually create two three way mirrors and then manually create a single stripe over the top... but I'm wondering if mdadm's raid10 has a way of knowing there should be three copies via an option? If mdadm can't create the raid 10, with two three way mirrors, my next questions are - Also how do I tell mdadm to create a three copy raid1? Eg. M1 M1 M1 Also do I then need to set up the madam.conf file to first have the two individual three way mirrors followed by the raid 0 over the top? eg. ARRAY /dev/md/1 UUID=aaaaaa... ## first triple mirror ARRAY /dev/md/2 UUID=bbbbbb... ## second triple mirror ARRAY /dev/md/3 UUID=cccccc... ## raid 0 over md/1 & md/2 Thanks in advance. Jon