Now that my home NAS has its hard drives installed, it's time to set up the RAID-1 array. As it turns out, this is pretty simple work. First, create a single Linux RAID Autodetect partition on each disk, taking up its entire usable space. You can do this by running
fdisk /dev/sda; fdisk is pretty powerful, so just in case you've never done this before, I'll walk you through the steps.