it's weird, the data store name is MD3220_10K but when you click on it, it's a shortcut to this folder: 53302d48-809f8970-585c-00221989c350
Don't worry, that's expected, and ok. ESXi internally works with the UUID rather than the friendly name, that's a datastore name can be changed at any time.
Anyway, your first screenshot shows the datastore with a Warning. Do you know what that is about?
André