ATA over Ethernet

Commands from this article.

grep ATA_OVER /boot/config-`uname -r`
modprobe aoe
apt-get install vblade
vbladed 0 1 eth1 /dev/sdb2
vbladed 0 2 eth1 /dev/sdb2
vbladed 0 3 eth1 /dev/sdb2

Client side

apt-get install aoetools
aoe-discover
aoe-stat
#      e0.1        70.071GB   eth0 up
#      e0.2        70.071GB   eth0 up
#      e0.3        70.062GB   eth0 up

mdadm -v --create /dev/md0 --level=raid10 --raid-devices=3 /dev/etherd/e0.1 /dev/etherd/e0.2 /dev/etherd/e0.3

Output from last command

mdadm: layout defaults to n1
mdadm: chunk size defaults to 64K
mdadm: layout defaults to n1
mdadm: /dev/etherd/e0.1 appears to contain an ext2fs file system
    size=68428864K  mtime=Sat Apr 10 17:44:03 2010
mdadm: layout defaults to n1
mdadm: /dev/etherd/e0.2 appears to contain an ext2fs file system
    size=68428864K  mtime=Thu Jan  1 03:00:00 1970
mdadm: layout defaults to n1
mdadm: size set to 68420736K
Continue creating array? y
mdadm: array /dev/md0 started.

Create file system

mkfs.ext4 -m 0 /dev/md0

Mount

mount /dev/md0 /mnt/backup

Disk size:

df -h
# /dev/md0               97G  188M   97G   1% /mnt/backup

You might want to take a look at vblade persist package.