[root@207 ~]# cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4]
md1 : active raid1 sdb2[1]
      4184832 blocks [2/1] [_U]

md0 : active raid1 sdb1[1]
      73963136 blocks [2/1] [_U]

unused devices: <none>
[root@207 ~]# cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4]
md1 : active raid1 sdb2[1]
      4184832 blocks [2/1] [_U]

md0 : active raid1 sdb1[1]
      73963136 blocks [2/1] [_U]

unused devices: <none>
[root@207 ~]# mdadm -D /dev/md0
/dev/md0:
        Version : 00.90.03
  Creation Time : Sat Apr  5 23:27:26 2008
     Raid Level : raid1
     Array Size : 73963136 (70.54 GiB 75.74 GB)
  Used Dev Size : 73963136 (70.54 GiB 75.74 GB)
   Raid Devices : 2
  Total Devices : 1
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sun Apr  6 17:51:45 2008
          State : clean, degraded
 Active Devices : 1
Working Devices : 1
 Failed Devices : 0
  Spare Devices : 0

           UUID : a21a6c37:dd10f13f:fab95dee:71114341
         Events : 0.236

    Number   Major   Minor   RaidDevice State
       0       0        0        0      removed
       1       8       17        1      active sync   /dev/sdb1
[root@207 ~]# mdadm -D /dev/md1
/dev/md1:
        Version : 00.90.03
  Creation Time : Sat Apr  5 23:27:25 2008
     Raid Level : raid1
     Array Size : 4184832 (3.99 GiB 4.29 GB)
  Used Dev Size : 4184832 (3.99 GiB 4.29 GB)
   Raid Devices : 2
  Total Devices : 1
Preferred Minor : 1
    Persistence : Superblock is persistent

    Update Time : Sun Apr  6 14:34:20 2008
          State : clean, degraded
 Active Devices : 1
Working Devices : 1
 Failed Devices : 0
  Spare Devices : 0

           UUID : ab159119:72ab092f:4b65b8a0:99398947
         Events : 0.8

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

[root@207 ~]# cat /etc/mdadm.conf

# mdadm.conf written out by anaconda
DEVICE partitions
MAILADDR root
ARRAY /dev/md0 level=raid1 num-devices=2 uuid=a21a6c37:dd10f13f:fab95dee:71114341
ARRAY /dev/md1 level=raid1 num-devices=2 uuid=ab159119:72ab092f:4b65b8a0:99398947
[root@207 ~]#