If you have recently upgraded to the version 7, you probably noticed twice the amount of HBA ports in your ESXi.
For EMULEX HBA:
esxcli system module parameters set -m lpfc -p lpfc_enable_fc4_type=1
Reboot the host.
For QLOGIC HBA;
esxcfg-module -s ‘ql2xnvmesupport=0’ qlnativefc
Reboot the host.