With an EVA external storage system, LUNs appear as Volume Properties in Device Manager - Storage Navigator windows.
If you search for the logical volumes by specifying the WWN for EVA Port A as illustrated in the following figure, logical volumes LUN 1 and LUN 2 are found for each of HostGroup-1 and HostGroup-2.
In this case, two different logical volumes with the same name (LUN 1 and LUN 2) are found that can be connected from EVA Port A. But you cannot determine which LUN 1 and LUN 2 belong to HostGroup-1 or HostGroup-2 only by Volume Properties.
However, in Device Manager - Storage Navigator, you can identify the logical volumes referring to Device ID. The first 32 characters of Device ID indicate the World Wide LUN Name. Identify the logical volume of the EVA storage system by this World Wide LUN Name.