boot from SAN on BL460C

Hi,

I have bl460c blade with no local disks and FC connection to SAN. My blade sees the LUN when I install ESXi host, but Im running into problems when Im trying to boot from SAN.  How do I configure emulex HBA's to be enabled.  I tried going into BIOS and configuring boot from WWNP but im getting an error "error happened during device scan".

could anyone help me how to configure this