Hi all, After some experiments on my RAID 1 I have next state of drives: root@Djordje-PC:/home/djordje# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda5[3] sdb5[2] 480441152 blocks super 1.2 [2/2] [UU] md0 : active raid1 sda1[3] sdb1[2] 7806912 blocks super 1.2 [2/2] [UU] What is number in brackets for example number 3 in sda5[3]? It is possible to change this number? I think that I had next state: md0 : active raid1 sda1[0] sdb1[1] 7806912 blocks super 1.2 [2/2] [UU] md1 : active raid1 sda5[0] sdb5[1] 480441152 blocks super 1.2 [2/2] [UU] before my experiments.