Be sure the zone contains the minimum number of host and storage ports possible. The Emulex and QLogic BIOS can become unresponsive if several other initiators are in the same zone and you try to select a boot LUN.

For example, if fifteen initiators and four Symmetrix ports are in one zone, you might not be able to select a boot device from either the Emulex or QLogic BIOS because it becomes unresponsive. If you zone the two host ports to see only the four storage ports, you can select a boot LUN.