Mdadm

Creating a Raid 1 Mirror

mdadm --zero-superblock /dev/sdb
mdadm --zero-superblock /dev/sdc

Create the array:

mdadm --create /dev/md0 --chunk=4 --level=1 --raid-devices=2 /dev/sdb /dev/sdc

That's it! Create the file system and you're done. Using 4k chunk size.

Disassemble / stop an array

mdadm --stop /dev/md0

Reassemble an array

mdadm --assemble --scan

You can assemble an array like:

mdadm --assemble /dev/md0 /dev/sdb /dev/sdc