So, I've created a RAID 1 array using two 500 GB hard drives.
I used a Linux Mint Boot Disk, and then used mdadm to create the RAID 1 array using 2 hard drives, each which has a single primary partition.
This was accomplished via:
mdadm --create --verbose --metadata=1.0 /dev/md0 --level=mirror --raid-devices=2 /dev/sda /dev/sdb
The array build took about an hour.
At this point, I'd like to install Linux Mint on the new RAID array. However, I'm uncertain how to proceed here. Since the RAID array is a software raid, where is the information about the array even stored? If I reboot, won't the information be lost? How do I go from creating the RAID array with mdadm, to actually installing an OS on it?