banting:~# cat /proc/mdstat
Personalities : [raid1]
md5 : active raid1 sda7[0] sdb7[1]
      251706304 blocks [2/2] [UU]

md4 : active raid1 sda6[2](F) sdb6[1]
      29294400 blocks [2/1] [_U]

md3 : active raid1 sda5[0] sdb5[1]
      19534912 blocks [2/2] [UU]

md2 : active raid1 sda3[0] sdb3[1]
      9767424 blocks [2/2] [UU]

md1 : active raid1 sda2[0] sdb2[1]
      1951808 blocks [2/2] [UU]

md0 : active raid1 sda1[0] sdb1[1]
      240832 blocks [2/2] [UU]

unused devices: <none>
banting:~#