[root@dba ~]# cat /proc/mdstat 
Personalities : [raid0] [raid1] 
md0 : active raid1 sdc1[1] sdb1[0]
      292961216 blocks [2/2] [UU]
      
md16 : active raid0 md10[0] md14[4] md13[3] md12[2] md11[1]
      341822080 blocks 64k chunks
      
md11 : active raid1 sdk1[2](F) sde1[1]
      68364480 blocks [2/1] [_U]
      
md12 : active raid1 sdl1[2](F) sdf1[1]
      68364480 blocks [2/1] [_U]
      
md14 : active raid1 sdg1[0] sdn1[2](F) sdh1[1]
      68364480 blocks [2/2] [UU]
      
md13 : active raid1 sdo1[2](F) sdm1[0]
      68364480 blocks [2/1] [U_]
      
md10 : active raid1 sdj1[2](F) sdi1[0] sdd1[1]
      68364480 blocks [2/2] [UU]
      
unused devices: <none>