Help with Linux Mint - this is why I do not like Linux!

So I created a raid 0 array of two drives in Linux.

But cleaning up some left over mount point folders from the previous two drives I accidently deleted the mount folder for it. To fix it I removed the array using mdadm, then recreated it.

All went well, except when I reboot it doesn’t auto mount, and I now can’t mount it either, I’m sure the first time round it did mount correctly after a reboot, but I might be imagining that!

What I get now.

and

and

Any idea’s please?
Also which file system would be quickest?