Personalities : [raid1] [raid0] md2 : active raid0 md1[1] md0[0] 4883517952 blocks super 1.2 512k chunks md1 : active raid1 sdb[2] sdc[3] 2930135360 blocks super 1.2 [2/2] [UU] md0 : active raid1 sdd[2] sde[3] 1953383360 blocks super 1.2 [2/2] [UU] unused devices: