We have been testing Vmware ESX with EMC san for our enterprize for a while now. Yes , your requirement doesn't seems to be clear. There is very thin line between SAN, NAS, ISCSI-SAN these days. So, got to be clear what exactly you wanna do and are also highly dependent on the line of product. So,  if you are a bit specific about your design and requirement,,may be i could help you.