JordanWr

I was finally able to get this figured out. You need to have the enable array autostart enabled in Settings>Disk Settings>Enable Auto Start = Yes. You must reboot unraid after changing this setting before it will take effect. If you don't have it enabled it doesn't look for the keyfile in /root/keyfile and just hangs on starting array.
 
Also just for anyone else looking at this later the emcmd cmdStart=Start command only works on version 6.10 or later based on someone else's comment.