root@Nibler:~# mdadm --examine /dev/sdd
/dev/sdd:
          Magic : Intel Raid ISM Cfg Sig.
        Version : 1.0.00
    Orig Family : bc081a95
         Family : bc081a95
     Generation : 00000056
     Attributes : All supported
           UUID : 20abbab0:bfc65211:fae8306d:1bed033e
       Checksum : de77ee21 correct
    MPB Sectors : 1
          Disks : 2
   RAID Devices : 1

  Disk01 Serial : WD-WX71EB6D6JL5
          State : active
             Id : 00000000
    Usable Size : 1953514766 (931.51 GiB 1000.20 GB)

[Echinops]:
           UUID : db4d2351:36a2bf8b:3508e539:9becbd9b
     RAID Level : 0
        Members : 2
          Slots : [_U]
    Failed disk : none
      This Slot : 1
    Sector Size : 512
     Array Size : 3711741952 (1769.90 GiB 1900.41 GB)
   Per Dev Size : 1855871240 (884.95 GiB 950.21 GB)
  Sector Offset : 0
    Num Stripes : 7249496
     Chunk Size : 128 KiB
       Reserved : 0
  Migrate State : idle
      Map State : failed
    Dirty State : clean
     RWH Policy : off

  Disk00 Serial : D-WXS1A57H1LVF:0
          State : active
             Id : ffffffff
    Usable Size : 1953514766 (931.51 GiB 1000.20 GB)