Xena:~ # mdadm --detail /dev/md0
/dev/md0:
        Version : 00.90.03
  Creation Time : Sat Sep 15 15:51:43 2007
     Raid Level : raid1
     Array Size : 18635328 (17.77 GiB 19.08 GB)
    Device Size : 18635328 (17.77 GiB 19.08 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sat Feb 16 13:14:20 2008
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 3d431e9f:6afc3615:47a1f311:e932804b
         Events : 0.1089952

    Number   Major   Minor   RaidDevice State
       0       3        2        0      active sync   /dev/hda2
       1      22        2        1      active sync   /dev/hdc2