If you are not satisfied with the performance of your QLogic adapter, you can change its maximum queue depth.

You can adjust the maximum queue depth for a QLogic qla2xxx series adapter by using the vSphere CLI.

1

Verify which QLogic HBA module is currently loaded by entering the following command: vmkload_mod -l | grep qla2xxx.

2

Run the following commands.

The example shows the qla2300_707 module. Use the appropriate module based on the outcome of the previous step.

vicfg-module -s ql2xmaxqdepth=64 qla2300_707

In this case, the HBA represented by ql2x will have its LUN queue depth set to 64.

3

Reboot your host.