Mount ISCSI storage share without LUN

Greetings,

I'm trying to add our Dell PS5000 iSCSI SAN and having issues. I can succesfully discover and login to the target, however it appears that the Dell SAN does not specify LUN's in a way that rhev reads them. Our current setup is using a 600GB volume with LV's. I haven't been able to find a way to add this SAN to RHEV-M as it is telling me to select a LUN (non-existant)

Any help appreciated

Thanks!