Enterprise Manager allows you to view the relationship between storage servers and storage clients. The Topology option displays the relationships between each exposed element such as LUNs or shares of the storage server and it's presence on a given host as devices and filesystems. It also shows the relationship between various applications such as database, or virtualization entities like VMs, and so on.
You can view the storage configuration topology of the storage appliance or the host. You can also view the storage configuration topology of a specific storage server element or a specific host element. Select the respective element and choose to view the topology details. See Viewing Storage Configuration Topology for the steps to view the topology of a selected storage appliance or a host.