A converged fabric based on Fibre Channel over Ethernet (FCoE) helps data center architects and managers reduce CAPEX, OPEX, while simplifying the network infrastructure. Up until recently, there was something hindering the adoption of FCoE: 10GBASE-T.
Historically, deploying FCoE on the links between servers and aggregation switches meant that one had to use optical fiber or Direct Attach Copper (DAC) cable assemblies. The first generation of aggregation switches that supported 10GBASE-T did not support FCoE. Additionally, 10GBASE-T Ethernet server adapters did not support FCoE as well, and FCoE was only available with Converged Network Adapters (CAN) that supported the SFP+ form factor. That meant one could implement ToR architectures with FCoE using DAC cable assemblies or other architectures using optical fiber for longer distances.