Host bus adapter-HbA card

Host Bus Adapter-Host Bus Adapter (HBA) is a Host Bus Adapter that provides input/output (I/O) between servers and storage devices) A circuit board and/or integrated circuit adapter that processes and physically connects. Because the HBA reduces the burden on the master processor in data storage and retrieval tasks, it can improve server performance. An hba and the connected disk subsystem are sometimes called a disk channel together. In fact, the optical fiber network card is commonly referred to as the optical fiber channel network card. Due to different transmission protocols, NICs can be divided into three types: Ethernet NIC, FC Nic, and iSCSI Nic. Ethernet Adapter: an Ethernet Adapter. The transmission protocol is an IP protocol. It is generally connected to an Ethernet switch through an optical fiber cable or twisted pair. Interfaces can be divided into optical ports and electrical ports. Optical interfaces are generally transmitted through optical fiber cables. The interface modules are SFP (Transfer Rate: 2 Gb/s) and GBIC (1 Gb/s), and the corresponding interfaces are SC, ST, and LC. Currently, the common electrical interfaces are RJ45, which are used to connect to twisted pair wires and interfaces connected to coaxial cables. However, these interfaces are rarely used. Fc nic: it is also called an optical fiber Nic. Its learning name is Fiber Channel HBA. The transmission protocol is an optical fiber channel protocol, which is generally connected to an optical fiber channel switch through an optical fiber cable. Interfaces can be divided into optical ports and electrical ports. Optical interfaces are generally transmitted through optical fiber cables. The interface modules are SFP (transfer rate of 2 Gb/s) and GBIC (1 Gb/s), and the corresponding interfaces are SC and LC. The electrical interface type is generally DB9 needle or HSSDC. Iscsi nic: The iscsi hba. The ISCSI protocol is transmitted. The interface type is the same as that of the Ethernet Card. The "optical fiber network interface" is generally an FC HbA card that is inserted on a server and used for external storage. The Ethernet interfaces of optical interfaces are generally called "Optical Fiber Ethernet interfaces ", it is also inserted on the server, but it is connected to an Ethernet switch with optical ports. summary: in fact, these NICs are very well differentiated, see the following table is clear: Memory Card: FC-HBA card (commonly known as: fiber Nic), iSCSI-memory card (RJ45 Interface) Ethernet Card: ethernet cards for optical fiber interfaces (also known as optical fiber Ethernet cards). However, these are common sayings and use environments. We recommend that you do not use the name of the optical fiber network card, but directly said that the FC-HBA card, so it will never cause misunderstanding