-bash-3.2# mdadm --detail /dev/md2
/dev/md2:
        Version : 0.90
  Creation Time : Sun Dec 23 07:39:46 2012
     Raid Level : raid1
     Array Size : 1942498240 (1852.51 GiB 1989.12 GB)
  Used Dev Size : 1942498240 (1852.51 GiB 1989.12 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 2
    Persistence : Superblock is persistent

    Update Time : Fri Mar  1 06:37:01 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 2696cb41:5976facd:a4d2adc2:26fd5302
         Events : 0.136

    Number   Major   Minor   RaidDevice State
       0       8        2        0      active sync   /dev/sda2
       1       8       18        1      active sync   /dev/sdb2