I'm looking for a way to show me the disk usage of all the network shares on my Windows Server.
Does such a method exist?
Not sure about showing just the network shares, but TreeSize from JAM Software will display the disk usage of folders.
Beow is a screen shot of the application which shows how it displays the size of folders both as a value (e.g. 3.7GB) and as a yellow bar graph.
You could you that as a starting point...