Mike Bird put forth on 7/12/2010 4:00 PM: > On Mon July 12 2010 12:45:57 Arcady Genkin wrote: >> Creating the ten 3-way RAID1 triplets - for N in 0 through 9: >> mdadm --create /dev/mdN -v --raid-devices=3 --level=raid10 \ >> --layout=n3 --metadata=0 --bitmap=internal --bitmap-chunk=2048 \ >> --chunk=1024 /dev/sdX /dev/sdY /dev/sdZ > > RAID 10 with three devices?
I had the same reaction Mike. Turns out mdadm actually performs RAID 1E with 3 disks when you specify RAID 10. I'm not sure what, if any, benefit RAID 1E yields here--almost nobody uses it. RAID 0 over (10 * RAID 1E) over 6 iSCSI targets isn't something I've ever seen anyone do. Not saying it's bad, just...unique. I just hope the OP gets prompt and concise drive failure information the instant one goes down, and has a tested array rebuild procedure in place. Rebuilding a failed drive in this kind of setup may get a bit hairy. -- Stan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4c3badff.9050...@hardwarefreak.com