/dev/md0:
        Version : 00.90
  Creation Time : Thu Nov 18 03:38:06 2010
     Raid Level : raid10
     Array Size : 9992320 (9.53 GiB 10.23 GB)
  Used Dev Size : 9992320 (9.53 GiB 10.23 GB)
   Raid Devices : 2
  Total Devices : 4
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Thu Nov 18 15:47:04 2010
          State : active
 Active Devices : 2
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 2

         Layout : near=2, far=1
     Chunk Size : 64K

           UUID : fae2bd4e:54dd9cdd:74a6559c:9ec0a684
         Events : 0.11

    Number   Major   Minor   RaidDevice State
       0       8        5        0      active sync   /dev/sda5
       1       8       21        1      active sync   /dev/sdb5

       2       8       38        -      spare   /dev/sdc6
       3       8       53        -      spare   /dev/sdd5