Qlogic QLA22xx board Installation Guide download pdf (Page 17)

4 – Windows NT Driver Installation Windows NT Installation

FC0153302-00 D 4-3

8. Select the QLogic QLA2200 PCI Fibre Channel Adapter, then click OK.

9. Remove the diskette and click Yes to restart the system.

4.3.3

Updating the Windows NT Driver

Perform the following steps if a Windows NT driver is already installed and you

want to install an updated version of the driver.

NOTE: This procedure does not modify the current Registry parameters for the

QLA22xx Windows NT driver.

1. Open a DOS command prompt window.

2. Change the current directory to the Windows NT driver directory. For

example:

CD \WINNT\SYSTEM32\DRIVERS

3. Make a backup copy of the old driver. You can copy the file into the same

directory with a .SAV extension indicating that it is the saved file. For

example:

COPY QL2200.SYS QL2200.SAV

4. Insert the diskette that contains the updated QLogic driver into an

appropriate drive.

5. Copy the new driver over the old driver. For example:

COPY A:\NT\QL2200.SYS

6. Remove the diskette that contains the QLogic driver.

7. Reboot your system to load the updated driver.

4.3.4

Enabling Enhanced Scatter/Gather

Windows NT 4.0 includes enhanced scatter/gather list support for handling very

large SCSI I/O transfers. Version 4.0 supports up to 256 scatter/gather segments

of 4096 bytes each, allowing transfers of up to 1,048,576 bytes. For some disk

drives, it is better to reduce the transfer size to 65, 536 bytes. To reduce the transfer

size, change the subkey value in the registry (see the QLogic README.TXT file

for more information).

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Qlogic QLA22xx board Installation Guide Page 17