mddm Multiple Disk and Device Management mdadm is a Linux utility used to manage and monitor software RAID devices. To create, format and mount¶ #create sudo mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/sda /dev/sdb # monitor mdadm --detail /dev/md0 # format sudo mkfs.ext4 /dev/md0 sudo mkdir /vol/raid sudo mount /dev/md0 /vol/raid