Hyper v and SAP MSCS

In a test environment on Hyper v , I have created two guest ( child) windows 2008 r2 systems. Now , i want to do the MSCS clustering on these two guest systems treating them as node1 and node2.

I require inputs for following question

1. How the SAN storage will be visible to both the child nodes at same time. ( The SAN partitions are visible to Hyper v host and also getting added as device to guest machine , however they are not getting attached to both virtual machines at same time)

Regards

Dharm Singh