Ubuntu MDADM RAID 10

mdadm_raid_10.sh

# Install mdadm
sudo apt-get update
sudo apt-get install mdadm

# Create RAID
sudo mdadm --create /dev/md0 --level=10 --raid-devices=4 /dev/xvdg /dev/xvdh /dev/xvdi /dev/xvdj

# Check Status
sudo mdadm --detail /dev/md0
sudo cat /proc/mdstat

# Add to mdadm.conf - double check the output below
sudo mdadm --detail --scan > /etc/mdadm/mdadm.conf
sudo update-initramfs -u

# Format Disk
sudo mkfs.ext4 /dev/md0

# Create Mount Point
sudo mkdir /mnt_raid

# Add to fstab
echo "/dev/md0        /mnt_raid       auto    defaults,nobootwait,noatime     0       0" | sudo tee /etc/fstab

# Restart & Check
sudo shutdown -r now