Hi,
the short answer is rtfm and its a tool from netapp who claim data about SAN Configuration (FAS, Brocade and so on) it collect a lot of Informations from your Systems and it help the NetApp Engineers to troubleshoot problems with your SAN Frontend. For Backend Problems is FMC_DC better.
It's very easy to start, when you download it and let it run you will see more. There is also a textfile with more Informationes.
cheers Soeren