fdisk
*****
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1         365     2931831   fd  Linux raid autodetect
/dev/sda2             366       38913   309636810   fd  Linux raid autodetect

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         365     2931831   fd  Linux raid autodetect
/dev/sdb2             366       38913   309636810   fd  Linux raid autodetect

blkid
*****
/dev/sda1: UUID="6752d2b1-4e02-e33a-c670-aab7b97b6949" TYPE="mdraid"
/dev/sda2: UUID="2033c327-cece-c65a-7aac-ab49237fa336" TYPE="mdraid"
/dev/sdb1: UUID="6752d2b1-4e02-e33a-c670-aab7b97b6949" TYPE="mdraid"
/dev/sdb2: UUID="2033c327-cece-c65a-7aac-ab49237fa336" TYPE="mdraid"
/dev/md0: TYPE="swap"
/dev/md1: UUID="b498929b-1c66-4d40-a600-a507ac31a671" TYPE="ext3"

fstab
*****
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/md1        /               ext3    errors=remount-ro 0       1
/dev/md0        none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto     0       0

mdadm.conf
**********
DEVICE partitions
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system>
MAILADDR root
ARRAY /dev/md0 level=raid1 num-devices=2 UUID=b1d25267:3ae3024e:b7aa70c6:49697bb9
ARRAY /dev/md1 level=raid1 num-devices=2 UUID=27c33320:5ac6cece:49abac7a:36a37f23

mdadm --detail --scan /dev/md0
******************************
/dev/md0:
        Version : 00.90
  Creation Time : Thu Mar 18 14:23:15 2010
     Raid Level : raid1
     Array Size : 2931712 (2.80 GiB 3.00 GB)
  Used Dev Size : 2931712 (2.80 GiB 3.00 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Wed Jan 23 10:38:51 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : b1d25267:3ae3024e:b7aa70c6:49697bb9
         Events : 0.96

    Number   Major   Minor   RaidDevice State
       0       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1

mdadm --detail --scan /dev/md1
******************************
/dev/md1:
        Version : 00.90
  Creation Time : Thu Mar 18 14:23:22 2010
     Raid Level : raid1
     Array Size : 309636736 (295.29 GiB 317.07 GB)
  Used Dev Size : 309636736 (295.29 GiB 317.07 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 1
    Persistence : Superblock is persistent

    Update Time : Wed Jan 23 10:41:01 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 27c33320:5ac6cece:49abac7a:36a37f23
         Events : 0.146

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