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Manually setting the topology for QLogic Fibre Channel adapters
43
Installing and Configuring the BIOS Settings
Manually setting the topology for QLogic Fibre Channel
adapters
The EMC default setting for the topology is set to 2 (Loop preferred;
otherwise, point to point).
For Linux environments, it is recommended that the Connection
Options parameter be set to 1 when attached to a fabric and to 0 when
directly attached to an EMC storage array.
Follow these steps to set the NVRAM variables for the topology:
1. Boot the host. When the QLogic banner appears, press Ctrl-Q to
enter the Fast!Util menu.
2. Select Configuration Settings from the Fast!Util Options menu.
3. Select Host Adapter Settings from the Configuration Settings
menu.
4. Select Connection Options (topology) and press Enter.
5. Select the appropriate topology and press Enter:
• FC-AL - 0 (loop only)
• FC-SW - 1 (point to point only)
6. Press ESC to return to the Fast!Util Options menu.
7. When prompted to save the changes made to the current adapter,
select Save Changes.
8. If you have more adapters to configure, choose Select Host
Adapter and repeat steps 2 through 7 for each adapter.
9. Press ESC to exit the Fast!Util menu.
10. Reboot the host.