Why does the Dell Server Deployment Pack require that the "Specify an FQDN for this site system for use on the Internet" setting be enabled in the Site System role in SCCM 2012?

I am trying to setup OSD for a PowerEdge R630 and going through the DSDP 3.0 documentation, it states that the "Specify an FQDN for this site system for use on the Internet" setting needs to be enabled. I don't have IBCM setup in my SCCM environment and I don't understand why the DSDP utility requires this. 

Can someone please offer some guidance here, please?

Thanks