Quoting from the Emulex official announcement:
Emulex Corporation, the most trusted name in storage networking connectivity, today announced that the Emulex LightPulse® family of HBAs , including the latest 4Gb/s PCI-X and PCI Express models, are fully supported as part of the new VMware Infrastructure 3.
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In March 2006, Emulex contributed its virtual HBA API to the VMware Community Source program to help drive standardization of SAN connectivity solutions for server virtualization environments.
The Sun branded version of LightPulse HBAs have been certified as well.