The difference between fibre channel and Ethernet optical module



Today, we will learn about optical fiber channel module, Ethernet optical module, and what is the difference between them? First of all, let's understand what fibre channel optical module is. It follows the fibre channel standard and is mainly used in the data center fibre channel storage network link. Its transmission rate can support 1-128Gbps at present. Common packages include SFP, SFP+, SFP28, SFP56 and QSFP28.



Next, let's learn what Ethernet optical module is. It follows IEEE 802.3 standard and is mainly used in data center, campus network, etc. its transmission rate can support 155M-400Gbps at present. It is commonly packaged with SFP, SFP+,SFP28, SFP56, QSFP+, QSFP28, QSFP-DD, etc. the types of Ethernet optical module include dual fiber optical module, bidi optical module, wavelength division optical modules, etc.






Finally, OPTCOM  will list some differences between the two.


1. Fibre channel (FC) optical module and Ethernet optical module follow different protocols. FC optical module is compatible with Ethernet protocol, but Ethernet optical module does not support fibre channel protocol.




2. The reliability of fibre channel (FC) optical module is better. The FC module is designed for users who pursue high speed and low latency for block storage. If the user needs to access the file level storage, priority should be given to the Ethernet module.




3. They support different transmission rates. OPTCOM'S fiber channel (FC) module supports 1G/2G/8G/16G/32G/56G/128G, Ethernet optical module supports 10 / 100 / 1000Mbps, 10Gb/25G/50G/40G/100G/400G.




4. The application fields of the two are different. Fibre Channel (FC) optical modules are used in FC optical switches, and Ethernet optical modules are used in Ethernet switches. 




Traditional fibre channel network, including FC switch and Fibre Channel cards (FC HBAs), is one of the main choices of San. FC switches connect the storage to the San, while optical network cards connect the switches to the servers. Ethernet switch has diversity, reflected in stackability, port number, transmission rate and so on.