I hope, the following guides will help:

Brocade SAN Design and Best Practices

Cisco Large SAN Design Best Practices Using Cisco MDS 9700 and MDS 9500 Multilayer Directors White Paper - Cisco

Here, you will find the EMC Techbooks - including the guide "Fibre Channel SAN topologies" - too:

http://www.emc.com/products/interoperability/topology-resource-center.htm

Fibre Channel SAN topologies