Converged Network Adapter
Converged Network Adapter (CNA) is in essence an FCoE ENode. CNA is usually a PCI express (PCIe) type adapter, which contains the functions of a traditional Host Bus Adapter (HBA) and a network interface card (NIC) all in one. Converged Network Adapters are also available in the mezzanine form factor for the use in server blade systems. The converged nature of CNAs requires them to operate at 10 Gb speeds or higher.
From the operating system perspective, CNAs are represented as two separate devices; as such, they still require two sets of drivers, one for the Ethernet and the other for Fibre Channel, just like in the case of physically segregated adapters. Figure 11-15 depicts the fundamental principle behind leveraging ...
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