So I just put a few old drives in a RAID 0 using mdadm and it was originally just for STeam games, but when I hit install, I don't know how to make it download onto my RAID 0 array... So is there a way to do that? If so how?

2 Answers

Using a Symlink

1. Mount your RAID array somewhere (like /media/tank)
2. Close Steam

3. Move ~/.steam/steam/steamapps/ to your RAID array.

   mv ~/.steam/steam/steamapps /media/tank/steamapps

4. Make a symlink

   ln -s /media/tank/steamapps ~/.steam/steam/steamapps

5. Start Steam and install some games.

Using Steam

Sometimes Steam detects mountpoints and shows them in the install dialog.

Screenshot

Mount your RAID array somewhere and it should appear.

Your raid device is /dev/md0. If you haven't done it already, you need to format it. for exemple

mkfs.ext4 /dev/md0

Then you can mount it :

mkdir /media/tank
mount /dev/md0 /media/tank

then follow Matthew's instructions.