Are you looking for normal FAST?  I think that needs to be purchased and loaded at installation of the array.   I just installed a new cx4-120 last week for a customer who ordered FAST and i had to load the enabler for it after i upgraded them to R30.  you are looking for FAST-240 to appear on your order if you want the tiering.
We are going to purchase a new CX4-240 Storage Array and would like to know whether Auto-tiering enabler comes with it OR has to be purchased seperately ?  Thanks
Does Auto-tiering enabler comes with new CX4 Storage Array ?