Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sdb1[1] sda1[0] 3904500 blocks super 1.2 [2/2] [UU] md1 : active raid1 sda2[0] sdc2[2](S) sdb2[1] 972854136 blocks super 1.2 [2/2] [UU] unused devices: