rune@rune-desktop:~$ cat /proc/mdstat
Personalities : [raid0] [linear] [multipath] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid0 sdd1[1] sdc1[0]
      1953522688 blocks super 1.2 512k chunks

md2 : active raid1 md0[2] sdb1[0]
      1953382488 blocks super 1.2 [2/2] [UU]

unused devices: <none>

rune@rune-desktop:~$ sudo mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Sun Aug 25 21:14:24 2013
     Raid Level : raid0
     Array Size : 1953522688 (1863.02 GiB 2000.41 GB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Sun Aug 25 21:14:24 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 512K

           Name : rune-desktop:0  (local to host rune-desktop)
           UUID : 4d8bea96:08136ba8:75029197:fe2e2a4b
         Events : 0

    Number   Major   Minor   RaidDevice State
       0       8       33        0      active sync   /dev/sdc1
       1       8       49        1      active sync   /dev/sdd1

rune@rune-desktop:~$ sudo mdadm --detail /dev/md2
/dev/md2:
        Version : 1.2
  Creation Time : Sun Aug 25 11:13:35 2013
     Raid Level : raid1
     Array Size : 1953382488 (1862.89 GiB 2000.26 GB)
  Used Dev Size : 1953382488 (1862.89 GiB 2000.26 GB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Tue Aug 27 13:46:49 2013
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           Name : rune-desktop:2  (local to host rune-desktop)
           UUID : 494e7219:c094f19f:97e26ffa:e09020d3
         Events : 21570

    Number   Major   Minor   RaidDevice State
       0       8       17        0      active sync   /dev/sdb1
       2       9        0        1      active sync   /dev/md/stripe

rune@rune-desktop:~$ cat /etc/mdadm/mdadm.conf |egrep -v "^#|^$"
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system>
ARRAY /dev/md/stripe UUID=4d8bea96:08136ba8:75029197:fe2e2a4b
ARRAY /dev/md/mirror UUID=494e7219:c094f19f:97e26ffa:e09020d3

rune@rune-desktop:~$ ls -lR /dev/md*
brw-rw---- 1 root disk 9, 0 Aug 27 13:22 /dev/md0
brw-rw---- 1 root disk 9, 2 Aug 27 13:30 /dev/md2

/dev/md:
total 0
lrwxrwxrwx 1 root root 6 Aug 27 13:30 mirror -> ../md2
lrwxrwxrwx 1 root root 6 Aug 27 13:22 stripe -> ../md0