mdadm -E /dev/sda5
/dev/sda5:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : ed3f5ec8:9bcce652:fcd23b95:abba0337
  Creation Time : Tue Sep 21 22:10:50 2004
     Raid Level : raid5
    Device Size : 16281728 (15.53 GiB 16.67 GB)
     Array Size : 65126912 (62.11 GiB 66.69 GB)
   Raid Devices : 5
  Total Devices : 5
Preferred Minor : 0

    Update Time : Mon Mar 26 23:35:44 2007
          State : clean
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 63d05616 - correct
         Events : 0.6117058

         Layout : left-symmetric
     Chunk Size : 32K

      Number   Major   Minor   RaidDevice State
this     0       8        5        0      active sync   /dev/sda5

   0     0       8        5        0      active sync   /dev/sda5
   1     1       8       21        1      active sync   /dev/sdb5
   2     2       8       37        2      active sync   /dev/sdc5
   3     3       8       48        3      active sync   /dev/sdd
   4     4       8       64        4      active sync   /dev/sde


root@magnia:~# mdadm -E /dev/sdb5
/dev/sdb5:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : ed3f5ec8:9bcce652:fcd23b95:abba0337
  Creation Time : Tue Sep 21 22:10:50 2004
     Raid Level : raid5
    Device Size : 16281728 (15.53 GiB 16.67 GB)
     Array Size : 65126912 (62.11 GiB 66.69 GB)
   Raid Devices : 5
  Total Devices : 5
Preferred Minor : 0

    Update Time : Mon Mar 26 23:35:44 2007
          State : clean
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 63d05628 - correct
         Events : 0.6117058

         Layout : left-symmetric
     Chunk Size : 32K

      Number   Major   Minor   RaidDevice State
this     1       8       21        1      active sync   /dev/sdb5

   0     0       8        5        0      active sync   /dev/sda5
   1     1       8       21        1      active sync   /dev/sdb5
   2     2       8       37        2      active sync   /dev/sdc5
   3     3       8       48        3      active sync   /dev/sdd
   4     4       8       64        4      active sync   /dev/sde


root@magnia:~# mdadm -E /dev/sdc5
/dev/sdc5:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : ed3f5ec8:9bcce652:fcd23b95:abba0337
  Creation Time : Tue Sep 21 22:10:50 2004
     Raid Level : raid5
    Device Size : 16281728 (15.53 GiB 16.67 GB)
     Array Size : 65126912 (62.11 GiB 66.69 GB)
   Raid Devices : 5
  Total Devices : 5
Preferred Minor : 0

    Update Time : Mon Mar 26 23:35:44 2007
          State : clean
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 63d0563a - correct
         Events : 0.6117058

         Layout : left-symmetric
     Chunk Size : 32K

      Number   Major   Minor   RaidDevice State
this     2       8       37        2      active sync   /dev/sdc5

   0     0       8        5        0      active sync   /dev/sda5
   1     1       8       21        1      active sync   /dev/sdb5
   2     2       8       37        2      active sync   /dev/sdc5
   3     3       8       48        3      active sync   /dev/sdd
   4     4       8       64        4      active sync   /dev/sde


root@magnia:~# mdadm -E /dev/sdd1
/dev/sdd1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : ed3f5ec8:9bcce652:fcd23b95:abba0337
  Creation Time : Tue Sep 21 22:10:50 2004
     Raid Level : raid5
    Device Size : 16281728 (15.53 GiB 16.67 GB)
     Array Size : 32563456 (31.05 GiB 33.34 GB)
   Raid Devices : 3
  Total Devices : 5
Preferred Minor : 0

    Update Time : Fri Jul  8 11:54:41 2005
          State : clean
 Active Devices : 3
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 2
       Checksum : 5fdbba1a - correct
         Events : 0.77

         Layout : left-symmetric
     Chunk Size : 32K

      Number   Major   Minor   RaidDevice State
this     4       8       65        4      spare   /dev/sde1

   0     0       8        5        0      active sync   /dev/sda5
   1     1       8       21        1      active sync   /dev/sdb5
   2     2       8       37        2      active sync   /dev/sdc5
   3     3       8       49        3      spare   /dev/sdd1
   4     4       8       65        4      spare   /dev/sde1


root@magnia:~# mdadm -E /dev/sde1
/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : ed3f5ec8:9bcce652:fcd23b95:abba0337
  Creation Time : Tue Sep 21 22:10:50 2004
     Raid Level : raid5
    Device Size : 16281728 (15.53 GiB 16.67 GB)
     Array Size : 32563456 (31.05 GiB 33.34 GB)
   Raid Devices : 3
  Total Devices : 4
Preferred Minor : 0

    Update Time : Mon Mar 26 20:28:04 2007
          State : clean
 Active Devices : 3
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 1
       Checksum : 63cfd526 - correct
         Events : 0.6106210

         Layout : left-symmetric
     Chunk Size : 32K

      Number   Major   Minor   RaidDevice State
this     3       8       49        3      spare   /dev/sdd1

   0     0       8        5        0      active sync   /dev/sda5
   1     1       8       21        1      active sync   /dev/sdb5
   2     2       8       37        2      active sync   /dev/sdc5
   3     3       8       49        3      spare   /dev/sdd1