HP StorageWorks 2/24 FW 07.00.00/HAFM SW 08.06.00 McDATA Products in a SAN Env - Page 227

Physical Planning Considerations 5 Figure 5-4 Configure Allow/Prohibit Matrix - Active Dialog Box To access the dialog box, ensure the FICON management style is enabled for the director or switch, then select the Allow/Prohibit and Active options from the Element Manager application's Configure menu. Figure 5-4 shows that port 1 (logical port address 05) is prohibited from communicating with port 6 (logical port address 0A), port 7 (logical port address 0B), and port 8 (logical port address 0C). When implementing an array that prohibits E_Port connectivity, be aware that ISLs can be configured as unavailable to attached devices, causing complex routing problems that can be difficult to fault isolate and be incorrectly diagnosed as issues associated with the devices. As an example of such a problem, refer to the simple two-director fabric illustrated in Figure 5-5. As shown in the figure, ISL 1 connects Director A and Director B through logical port addresses 09 and 1A. ISL 2 connects the directors through logical port addresses 0A and 1B. A source server attaches to Director A through logical port address 05. Two destination devices attach to Director B through logical port addresses 2C and 2D. Physical Planning Considerations 5-21