Consider from the following five aspects:
1. Bus type
Confirm whether the selected optical network card is compatible with the existing network device. Generally, the server needs to use the optical network card of PCIe or PCI bus. But for the computer, the optical network card of PCI and PCI-X bus can be selected.
2. Data transmission rate
For the server, because the server application needs high bandwidth to manage large data traffic, the server should choose 10g or 25g optical network card to realize high-speed network connection. For the computer, select 100Mbps or 1000Mbps optical network card.
3. Number of ports
Generally, in normal use, the single port optical network card can be selected, but considering the security and reliability of the network, the multiple port optical network card is the best choice for the server, because the multiple port optical network card can provide redundancy and effectively avoid network paralysis caused by failure.
4. Connector type
The use of optical network card is mainly to connect the computer or server to the network by using cables. Therefore, before choosing optical network card, it is necessary to find out what connector types (cables) are supported on the computer or server, such as twisted pair of RJ45 interface, optical fiber jumper of LC / SC interface, DAC high-speed cable or AOC active optical cable of even SFP + or qsfp +, according to the actual supported connector types You can choose.
5. Operating system
Because each server supports different operating systems, it is necessary to determine whether the server's operating system can be supported before purchasing the server's optical network card.
Whether you want to find the optical network card for home use, small and medium-sized enterprises (SMB) or large data centers, you must know the type of the optical network card before you buy it.
