mail ~ # mdadm -E /dev/sda1
/dev/sda1:
          Magic : a92b4efc
        Version : 00.90.03
           UUID : 716f9031:23ab8a07:8c10d760:9355dd92
  Creation Time : Tue Jun 12 07:11:53 2007
     Raid Level : raid1
  Used Dev Size : 80192 (78.33 MiB 82.12 MB)
     Array Size : 80192 (78.33 MiB 82.12 MB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1

    Update Time : Tue Jun 12 08:50:05 2007
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : ea8b6e71 - correct
         Events : 0.38


      Number   Major   Minor   RaidDevice State
this     0       8        1        0      active sync   /dev/sda1

   0     0       8        1        0      active sync   /dev/sda1
   1     1       8       49        1      active sync   /dev/sdd1


mail ~ # mdadm -E /dev/sda2
/dev/sda2:
          Magic : a92b4efc
        Version : 00.90.03
           UUID : f32086ab:6e9d049e:737c6b5b:7ad3ce07
  Creation Time : Tue Jun 12 07:12:40 2007
     Raid Level : raid1
  Used Dev Size : 8168960 (7.79 GiB 8.37 GB)
     Array Size : 8168960 (7.79 GiB 8.37 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2

    Update Time : Tue Jun 12 08:15:49 2007
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 8692c9ce - correct
         Events : 0.158


      Number   Major   Minor   RaidDevice State
this     0       8        2        0      active sync   /dev/sda2

   0     0       8        2        0      active sync   /dev/sda2
   1     1       8       50        1      active sync   /dev/sdd2