If you have installed Solutions Enabler on a host server connected to your VMAX, you can use the symvm command to list servers and datastores.
If not, you can install the Solutions Enabler Virtual Appliance in your VMware environment, supplied as a downloadable OVA. Once you install and configure the appliance, you can enable the VASA provider and get VMAX information displayed directly in vSphere. This is the fastest route, because you’ll be able to see the SymDev number of each LUN for your mapping purposes.
You can get more detail about the VASA provider and how it’s used in this old whitepaper. It gives you a pretty clear overview of how this integration pulls all the data you need into vSphere.
Let us know if that helps!