,R610 Don't load HDD

Hi, i've bought a Dell poweredge R610 with a SAS 6/iR integrated. For the HDD i bought " 1.2TB HDD HGST SAS 10K Rpm 2,5'' HUC101812CSS200 CF0A9C1 SAS-2" but i don't know why, when i boot my server and go in Setup System i don't see any "Type CTRL-R for raid", but only "Type CTRL+S for SAS...". The problem is that my server doesn't recognize my hdd and i dont know how to fix it.

Thanks