Users Guide

3–Fibre Channel Configuration
Setting Queue Depth
64 CU0354604-00 R
Changing the Windows Queue Depth
The default queue depth value on Windows is 20 and the range is 0–254.
To change the default value:
1. Click Start, select Run, and open the REGEDIT/REGEDT32 program.
2. Select HKEY_LOCAL_MACHINE and then expand the tree structure down to
the QLogic driver as follows:
HKEY_LOCAL_MACHINE
SYSTEM
CurrentControlSet
Services
Ql2300
Parameters
Device
3. Double-click DriverParameter:REG_SZ:qd=32.
4. If the string qd= does not appear, append it to end of the string
as ;qd=32.
5. Click OK.
6. Exit the Windows Registry Editor, and then shutdown and reboot the system.
Changing the Linux Queue Depth
The default queue depth value on Linux is 64 and the range is 1–65535.
To change the default value:
1. Set the module parameter by adding the following line to the
modprobe.conf file:
options qla2xxx ql2xmaxqdepth=X
where X is the new queue depth value.
2. Save and close the modprobe.conf file.