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Setting the Queue Depth for an Emulex HBA on ESX Server 3.0

Details

On an ESX Server 3.0 system, how do I set the queue depth for an Emulex host bus adapter (HBA)?

Solution

To change the queue depth of an Emulex HBA on an ESX Server 3.0 system:
  1. Log on to the service console as root.

  2. Verify which Emulex HBA module is currently loaded:

    [root@esxhost]# vmkload_mod -l | grep lpfcdd

    Depending on the model of the HBA, the module can be one of the following:

    1. lpfcdd_7xx
       
    2. lpfcdd_732.o - This 4GB driver is included with ESX Server 3.0.1. In some cases, you might need to downgrade to a 2GB driver.
      See Using 2GB Fibre Channel Drivers on ESX Server 3.0.1 (http://kb.vmware.com/kb/1560391).
       
  3. For a single instance of an Emulex HBA on the system, run the following commands. The example shows the lpfcdd_7xx module. Please use the appropriate module based on the outcome of the above step.

    [root@esxhost]# esxcfg-module -s lpfc0_lun_queue_depth=64 lpfcdd_7xx

    [root@esxhost]# esxcfg-boot –b

    In this case, the HBA represented by lpfc0 will have its queue depth set to 64.
     
  4. For multiple instances of an Emulex HBA on the system, run the following commands:
     
    [root@esxhost]# esxcfg-module -s "lpfc0_lun_queue_depth=64 lpfc1_lun_queue_depth=64" lpfcdd_7xx
     
    [root@esxhost]# esxcfg-boot –b
     
    In this case, both HBAs lpfc0 and lpfc1 will have their queue depths set to 64.
     
  5. Reboot.

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