Note: In this example I have two hard drives, /dev/sda and /dev/sdb with partitions /dev/sda1 and /dev/sdb1 as well as /dev/sda3 and /dev/sdb3. 1. Check raid health by typing this command “cat proc/mdstat” in terminal. [root@linuxbox /]# cat proc/mdstat Personalities : [raid1] md1 : active raid1 sda3[0] 459025152 blocks [2/1] [U_] md0 : active raid1…