Verify which HBA module is currently loaded by entering one of these commands on the service console:
For QLogic:
# esxcli system module list | grep qla
For ESXi 5.5 QLogic native drivers:
# esxcli system module list | grep qln
For Emulex:
# esxcli system module list | grep lpfc
For Brocade:
# esxcli system module list | grep bfa
To check the parameters of the driver
esxcli system module parameters list -m qlnativefc
Change the qlogin native driver
esxcli system module parameters set -p ql2xmaxqdepth=255 -m qlnativefc
esxcli system module parameters set -p ql2xloginretrycount=60 -m qlnativefc
esxcli system module parameters set -p qlport_down_retry=60 -m qlnativefc
