How to purchase 25g optical network card

At present, some network card manufacturers in order to meet the stringent requirements of the current data center environment , Developed high flexibility 、 Extensibility is strong 、 Faster 25G Optical network card .25G Optical network card is generally used for connection between server and switch , For servers that operate frequently , You need to choose a higher rate 25G Optical network card . In the choice 25G Optical network card , You can focus on the following three aspects ：
One 、 Consider according to bus
Common bus types are ：PCI、PCI-E and PCI-X Bus .PCI-E The bus has obvious performance advantages in rate transmission , Now it has been widely used in various motherboards . Before the user selects the network adapter , Confirm your own computer bus type , Select the matching network adapter . Generally speaking , Today's servers or workstations will consider PCI-E The network adapter of the bus .
Two 、 Interface type of optical network card
The interface type of the optical fiber network card is distinguished according to the interface definition of the optical fiber module , Conventional optical fiber module interfaces can be divided into SC、LC、ST、FC And so on . Customers can choose to insert multimode or single-mode fiber modules according to the interface type and actual needs , Then according to the actual transmission distance , Select optical fiber module with different transmission distance to insert .
3、 ... and 、 Do you have RDMA function
As can be seen from the following table , Three new 25G The biggest difference in the functions of network cards is RDMA Function support .RDMA The advantage of functional network card lies in its high performance 、 High throughput 、 Low latency, etc .
LR-LINK Lianrui's new 25G Optical network card （LRES1021PF-2SFP28） And Intel original adapter card support RDMA function （RoCE v2、iWARP） It can be applied to any IP The Internet . In addition, it also has application device queue ADQ key technology , Improved predictability of application response times through enhanced Traffic Oriented Technology , This can not only assign more computing servers to tasks , It also allows more users to access the system , And provide a better end-user experience .
summary ： Partners who need to purchase network cards can search LR-LINK When entering the official website, Lianrui will have professional technical customer service to answer your questions .