how to give virtual machine direct access to iscsi LUN

Hi,

In our vSphere environment, we have enabled iSCSI storage presentation from our NetApp vFiler directly to virtual machine guests. This is for database virtual machines to take advantage of NetApps SnapManager for SQL. The virtual machine OS VMDK is stored on seperate NFS volumes presented to the ESX hosts.

Do we have to create virtual machine port group on the VM vSwitch and use iscsi initiator inside the guest VM to give it access to iSCSI LUN ? or another step is necessary ?

any help advice would be appreciated

Stephane