Card, the English name is the Network Interface Card, abbreviation: NIC. It is a computer hardware to allow communication over a network.
First, the Ethernet card
Ethernet transport protocol is TCP / IP protocol, the Ethernet switch connected to a twisted pair or fiber optic cables. By interface types can be divided into electrical and fiber optic LAN port Ethernet card. RJ45 interface card uses electrical port for connection to twisted pair. Fiber Ethernet card for data transmission through a fiber optic cable, generally the SFP interface module, the corresponding interface as LC.
Effect of the HBA (Host Bus Adapter) is connected to the server or storage network storage via SCSI or Fiber Channel. Reduce the burden on CPU during data storage and retrieval tasks can improve server performance. HBA card by interface types can be divided into two kinds of electrical and fiber, electrical HBA port RJ45 interface cards, SCSI protocol running over IP networks, called ISCSI-HBA card. HBA optical interface card using Fiber Channel protocol, known as FC-HBA card.
Technical NIC teaming, previously wrote an article: https://blog.csdn.net/lm236236/article/details/84192590
