This is just a reminder to myself so I don’t forget again.
Warning: Use this on your own risk! You might lose all the data stored on any of the hard disk drives if you make a mistake!
On Linux hard drives > 2 GB must be partitioned with parted and a partition table in gpt format.
Create a new gpt partition table (deleting the entire drive!):
parted /dev/sdX mklabel gpt
Create a new partition spanning the entire drive and using optimal alignment:
parted -a opt /dev/sdX mkpart primary 0% 100%
Set a partition’s raid flag:
parted /dev/sdX set 1 raid on