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markuz@markus-purkki:~$ sudo mdadm --detail /dev/md?
/dev/md0:
        Version : 00.90.03
  Creation Time : Fri Dec 28 10:10:51 2007
     Raid Level : raid1
     Array Size : 244195904 (232.88 GiB 250.06 GB)
    Device Size : 244195904 (232.88 GiB 250.06 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sun Mar 16 22:58:03 2008
          State : active
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 1033e554:2444f127:9b8a1cfa:293d3e53
         Events : 0.21

    Number   Major   Minor   RaidDevice State
       0       3        1        0      active sync   /dev/hda1
       1      22       65        1      active sync   /dev/hdd1
/dev/md1:
        Version : 00.90.03
  Creation Time : Sat Jan  5 18:30:28 2008
     Raid Level : raid1
     Array Size : 156288256 (149.05 GiB 160.04 GB)
    Device Size : 156288256 (149.05 GiB 160.04 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1
    Persistence : Superblock is persistent

    Update Time : Sun Mar 16 22:58:03 2008
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 47645dfe:a5d52d47:229a9155:8865485e
         Events : 0.14

    Number   Major   Minor   RaidDevice State
       0      22        1        0      active sync   /dev/hdc1
       1      34       65        1      active sync   /dev/hdh1
markuz@markus-purkki:~$