In vSphere client Select :
esxi host
Configure Tab
Storage Devices
Select the DataStore you are interested in
Select Paths Tab
Look for the path that "Active I/O" - the target should comtain the IP address
iqn.1986-03.com.hp:storage.storage1.170329358b:172.50.11.134:3260
thats the IP address of the target datastore