Quoting from the Emulex official annoucement:
Emulex Corporation, the most trusted name in storage networking connectivity, today announced that Emulex has formalized participation in the VMware Community Source program…
Emulex will help drive standardization of SAN connectivity solutions for server virtualization environments.As part of its participation, Emulex is contributing its LightPulse(R) Virtual HBA API specification, based on N-port ID Virtualization (NPIV), which enhances the overall functionality of the SAN in server virtualization environments. Emulex, in cooperation with other members of the VMware Community source program, will be a key participant in the development of a virtual HBA API. This API will enable HBAs to connect virtual machines to SANs improving fabric-based quality of service mapping to virtual machines, increasing supportability of large VMware VMotion clusters, and providing more transparent support of standard zoning tools…