A company needs to lower operational, power, and cooling costs while preserving their existing Ethernet and Fibre Channel infrastructure. To achieve this goal, they plan to reduce the number of…

Host Channel Adapters (HCAs) are InfiniBand-specific adapters and do not support Fibre Channel or standard Ethernet, so they would not preserve an existing FC and Ethernet infrastructure.

InfiniBand Target Channel Adapters (TCAs) are specialized InfiniBand endpoint devices and are unrelated to consolidating Fibre Channel and Ethernet connectivity.

NICs with TCP/IP offload engines (TOE) accelerate Ethernet processing but do not add Fibre Channel capability, so separate FC HBAs and their associated cables would still be required.

A CNA integrates both a Fibre Channel Host Bus Adapter and an Ethernet Network Interface Card into one physical card, allowing a single adapter and cable to carry both storage (FCoE or native FC) and network traffic. This directly reduces the number of separate adapters installed per server and the associated cabling, lowering hardware costs, power consumption, and cooling requirements. Existing FC SANs and Ethernet networks are preserved because the CNA supports both protocols natively.