Create mdadm raid array Ubuntu 20.04

commands.sh

# Credit to https://www.youtube.com/watch?v=o_PnB7bHhA0

# create raid based upon drives
sudo mdadm --create /dev/md1 --level=1 --raid-devices=4 /dev/sd[a-d]

# list drives
lsblk

# get status of raid setup
# CHANGE md0 TO WHATEVER YOU WANT TO CALL THE PARTITION
sudo mdadm --details /dev/md1
# can also do
# CHANGE md0 TO WHATEVER YOU WANT TO CALL THE PARTITION
sudo watch mdadm --details /dev/md1

# After done syncing format raid into ext4 partition
sudo mkfs.ext4 -v /dev/md1

# mount drive
sudo mkdir /mnt/raid1 # you can interchange raid1 with whatever you want to name your logical drivce
sudo mount /dev/md1 /mnt/raid1