After upgrading ESXi hosts to 7.0 U3, the Emulex FC cards are not detected.
The adapter models have gone end of life and are no longer supported on the latest software releases(As per Broadcom document).
The following HBA models have gone End of Support and are deprecated in the 14.0.x.x drivers (For OCe14000-series VMware 7.0 U3 inbox driver will be 12.0.1500.2)
Emulex LPe12000-series 8Gb/s PCIe 2.0 FC HBA
Emulex LPe16000-series 16Gb/s PCIe 2.0 FC HBA
Emulex OCe14000-series 10GbE FCoE Adapter
https://www.broadcom.com/support/knowledgebase/3211238682009/broadcom-emulex-end-of-life-hba-models-not-detected-with-14.0.x.x-and-later-drivers
Install the compatible 12.8.x.x drivers for version 7.0 U3 according to VMware HCL - Requires ESXi reboot after installation.
After the upgrade, the HBA cards will not be detected under the "Storage Adapters" page.
As a result, the datastores will be inaccessible.