root@office:~# mdadm --detail /dev/md127
/dev/md127:
        Version : ddf
     Raid Level : container
  Total Devices : 2

Working Devices : 2

 Container GUID : 49424D20:20202020:10000079:101403B2:43C0E1F6:C2B6842B
                  (IBM      01/08/16 11:57:10)
            Seq : 000b33fb
  Virtual Disks : 3

  Member Arrays : /dev/md126

    Number   Major   Minor   RaidDevice

       0       8       16        -        /dev/sdb
       1       8        0        -        /dev/sda