I used mdadm to create a RAID device, which apparently is /dev/md0. I need to mount it in order to be able to use it. "Mount" is asking for the filesystem type. I know I need a -t switch, but don't know what to do. I've tried "ext4", but got "wrong fs type".

Any ideas?

-neither drive is the boot drive.
-I have created the folder or "directory" called /media/raid