Use the #vmkload_mod -l grep lpfcdd command to verify which Emulex HBA is currently loaded.
For a single instance of an Emulex HBA, enter the following command: #esxcfg-module -s lpfc0_lun_queue_depth=16 lpfcdd_7xx
Note: Depending on the model of the HBA, the module can be either lpfcdd_7xx or lpfcdd_732. The above command uses the lpfcdd_7xx module. You should use the appropriate module based on the outcome of vmkload_mod -l.
Running this command will set the LUN queue depth to 16 for the HBA represented by lpfc0.
For multiple instances of an Emulex HBA, run the following command: a esxcfg-module -s "lpfc0_lun_queue_depth=16 lpfc1_lun_queue_depth=16" lpfcdd_7xx
The LUN queue depth for lpfc0 and the LUN queue depth for lpfc1 is set to 16.