Configuring the QLogic HBA for hosts running the Windows Server operating system

This section applies to hosts that are running the Windows® 2000 Server, Windows Server 2003, or Windows Server 2008 operating system. After you have installed the QLogic HBA and the device driver, you must configure the HBA.

For more information on supported QLogic models, see the following IBM® Web site:

www.ibm.com/storage/support/2145

To configure the HBA BIOS, either use the QLogic HBA manager software or reboot into the Fast!UTIL tool. Configure the following settings:

Host Adapter BIOS: Disabled (unless the machine is configured for SAN Boot)
Adapter Hard Loop ID: Disabled
Connection Options: 1 - point to point only
LUNs Per Target: 0
Port Down Retry Count: 15

Set the execution throttle to a suitable queue depth for your environment, for example, a value of 100. If you are using subsystem device driver (SDD) 1.6 or later, set Enable Target Reset to No. See Table 1 to include the required parameters for the registry key.

Table 1. Registry key parameters for QLogic models
Key	Required parameters
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > ql2xxx > Parameters > Device > DriverParameters	Buschange=0;FixupInquiry=1 Note: If you are using QLogic driver version 9.1.2.11 or later, Buschange cannot be set to zero. Refer to your device driver documentation for details.