Personalities : [linear] [raid0] [raid1] [raid5] [hsm] 
read_ahead 1024 sectors 
md0 : active raid5 sdd1[3] sdc6[2] sdb6[1] sda5[0] 633984 blocks
 level 5, 32k chunk, algorithm 2 [4/4] [UUUU] 
unused devices: <none>