QLogic QLA2000/QLA2100 Miniport Driver for Windows NT * This release has been tested with Windows NT Version 4.00. Earlier versions of NT are not supported. * The following files on this disk support Windows NT: QLOGIC Diskette identification file TXTSETUP.OEM Driver installation script for initial Windows NT text setup \NT\OEMSETUP.INF Driver installation script for the Windows NT Setup program \NT\QL2100.SYS QLogic QLA2000/QLA2100 miniport driver for Windows NT \NT\README.TXT This file * If the miniport driver is already installed and you are installing an updated version of the driver, follow this procedure: 1. Open a DOS Command Prompt window. 2. Change the current directory to the NT driver directory: CD \WINNT\SYSTEM32\DRIVERS 3. Make a backup copy of the old driver: COPY QL2100.SYS QL2100.SAV 4. Insert the diskette with updated driver and copy it over the old driver: COPY A:\NT\QL2100.SYS 5. Shutdown and reboot the system to use the updated driver. * To initially install the QLogic miniport driver on an installed Windows NT system, follow this procedure: 1. Click on "Start". 2. Under "Settings", click on "Control Panel". 3. Select "SCSI Adapters" from the Control Panel. 4. Select the "Drivers" tab and then click on "Add". 5. Click on "Have Disk". 6. Insert the QLogic software diskette. 7. Enter "A:\NT" for the path to NT driver and click "OK". 8. Choose "QLogic QLA2000/QLA2100, PCI-Fibre Channel Adapter" and click "OK". 9. Select "Yes" to restart system. * To initially install Windows NT on the boot disk attached to the QLogic QLA2000/QLA2100 adapter, follow this procedure: 1. Start NT installation procedure using Windows NT Setup diskettes. 2. After the standard devices have been detected and configured, use "S" option to "Specify Additional Device". 3. Select "Other" and press ENTER. 4. Insert the QLogic software diskette and press ENTER. 5. Select the "QLogic QLA2000/QLA2100" and press ENTER. 6. Continue with standard installation procedure. * Windows NT Version 4.0 includes enhanced scatter/gather list support for doing very large SCSI I/O transfers. NT 4.0 supports up to 256 scatter/gather segments of 4096 bytes each, allowing transfers up to 1048576 bytes. NOTE: the OEMSETUP.INF file has been updated to automatically update the registry to support 65 scatter/gather segments. Normally, no additional changes will be necessary as this typically results in the best overall performance. If you wish to alter this value, please use the following procedure: 1. Click on "Start", select "Run", and open the REGEDT32 program. 2. Select HKEY_LOCAL_MACHINE and follow the tree structure down to the QLogic driver as follows: HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services Ql2100 3. Select the "Ql2100" key and use Edit/Add Key to create a new subkey named "Parameters". 4. Select the new "Parameters" key and use Edit/Add Key to create a new "Device" subkey. If multiple adapters are installed, you can specify separate subkeys for each adapter by using a subkey name of "DeviceN", where N = the SCSI host adapter number (0, 1, 2, etc.). The tree structure should now look as follows: HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services Ql2100 Parameters Device (or DeviceN) 5. Select the "Device" key and use Edit/Add Value to add a new value name of "MaximumSGList". Set the data type to REG_DWORD and enter a value from 16 to 255 (10 hex to FF hex). A value of 255 (FF hex) enables the maximum 1 MByte transfer size. Setting a value higher than 255 results with the default of 64K transfers. The default we use is 65 (41 hex). 6. Exit the Registry Editor, then shutdown and reboot the system. * Windows NT supports the "NumberOfRequests" registry parameter to specify the maximum number of outstanding requests per adapter. When the QLogic driver is installed, the registry will be automatically updated with this parameter set to a value of 224. WARNING: DO NOT increase this parameter above 224. Doing so can result in a system failure. * When attaching more than 19 devices to an adapter, the "SCSI Adapters" control panel application fails to list the adapter and the attached devices. The devices are correctly displayed by the Registry Editor and by the Disk Administrator.