Installation guide

FC0153302-00 D A-1
Appendix A
QLDIRECT for Windows NT 4.0 and
Windows 2000
A.1
Introduction
The QLDIRECT driver, coupled with the QLogic Windows NT enhanced miniport
driver, provides the following features:
❑
A highly optimized I/O path for normal read and write operations with
reduced CPU utilization and increased parallelization
❑ Fail-over and fail-back features to reroute I/O operations to the correct path
This appendix provides installation instructions for the QLDIRECT driver in an
already installed Windows NT 4.0 or Windows 2000 operating system.
NOTE: The QLDIRECT driver has been tested with Windows NT 4.0 and
Windows 2000. Earlier versions of these operating systems are not
supported.
A.2
QLDIRECT Driver Files
QLDIRECT.SYS requires the QL2200.SYS enhanced miniport driver
version 7.00.00 or above. The latest version of the QLDIRECT driver and
QL2200.SYS enhanced miniport driver for Windows NT and Windows 2000 are
available on the QLogic web site.
A.3
QLDIRECT Installation
If QLDIRECT is not yet installed on your system, perform the installation
procedures in appendix A.3.1. If the QLFILTER driver is installed on your system,
perform the update procedures in appendix A.3.2.