Which protocol allows Fibre Channel to be transmitted over Ethernet?

The ability to transmit Fibre Channel over Ethernet is facilitated by the FCoE protocol, which stands for Fibre Channel over Ethernet. This technology encapsulates Fibre Channel frames within Ethernet frames, allowing for the convergence of storage traffic and general network traffic over a single Ethernet infrastructure.

FCoE maintains the performance characteristics of Fibre Channel while leveraging the flexibility and cost-effectiveness of Ethernet networks. This integration reduces the number of required physical connections and simplifies overall network management by allowing both storage and data networking to occur on a unified platform.

HBA, which stands for Host Bus Adapter, refers to the hardware that connects a server to a storage network, facilitating the communication to various storage devices but does not represent a protocol itself. iSCSI is a separate protocol used to encapsulate SCSI commands over IP networks rather than Ethernet specifically for Fibre Channel. Finally, SAN, or Storage Area Network, is a broader term that refers to a dedicated network designed to connect storage devices and servers but does not point to a specific method of transmission like FCoE does. Therefore, FCoE is the correct choice for the transmission of Fibre Channel over Ethernet.