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Setting queue depths on Windows hosts

On Windows hosts, you can use the LPUTILNT utility to update the queue depth for Emulex HBAs and the SANsurfer HBA manager utility to update the queue depths for Qlogic HBAs.

To update Emulex HBA queue depths​

  1. Run the LPUTILNT utility located in the C:\WINNT\system32 directory.
  2. Select Drive Parameters from the menu on the right side.
  3. Scroll down and double-click QueueDepth.
    Note
    If you are setting QueueDepth greater than 150, the following Windows Registry value also need to be increased appropriately: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\lpxnds\Parameters\Device\NumberOfRequests

To update Qlogic HBA queue depths​

  1. Run the SANsurfer HBA manager utility.
  2. Click on HBA port > Settings.
  3. Click Advanced HBA port settings in the list box.
  4. Update the Execution Throttle parameter.