Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md0 : active raid1 sde1[3] sdd1[2] sdc1[1] sdb1[0]
      41909120 blocks super 1.2 [4/4] [UUUU]
      
unused devices: <none>