InfiniBand和Fibre Channel

InfiniBand (IB) is a computer networking communications standard used in high-performance computing that features very high throughput and very low latency. It is used for data interconnect both among and within computers. InfiniBand is also used as either a direct or switched interconnect between servers and storage systems, as well as an interconnect between storage systems. It is designed to be scalable and uses a switched fabric network topology. As an interconnect, IB competes with Ethernet, Fibre Channel, and Intel Omni-Path.

The InfiniBand Trade Association (IBTA) is the standards organization that defines and maintains the InfiniBand specification. It is an industry consortium. The IBTA was established in 1999, and members included IBM, Intel, Mellanox Technologies, Oracle Corporation, HP, and Cray.

As of 2014, it was the most commonly used interconnect in supercomputers. Mellanox manufactures InfiniBand host bus adapters and network switches, and, in February 2016, it was reported that Oracle Corporation had engineered its own InfiniBand switch units and server adapter chips for use in its own product lines and by third parties.

In addition to a board form factor connection, it can use both active and passive copper (up to 10 meters) and optical fiber cable (up to 10 km). QSFP connectors are used. InfiniBand switch with CX4/SFF-8470 connectors:

The InfiniBand Association also specified the CXP connector system for speeds up to 120 Gbit/s over copper, active optical cables, and optical transceivers using parallel multi-mode fiber cables with 24-fiber MPO connectors.

InfiniBand has no standard API. The standard only lists a set of verbs such as ibv_open_device or ibv_post_send, which are abstract representations of functions or methods that must exist. The syntax of these functions is left to the vendors. Sometimes for reference this is called the verbs API. The de facto standard software stack is developed by OpenFabrics Alliance. It is released under two licenses GPL2 or BSD license for GNU/Linux and FreeBSD, and as Mellanox OFED for Windows (product names: WinOF / WinOF-2; attributed as host controller driver for matching specific ConnectX 3 to 5 devices) under a choice of BSD license for Windows.

Ethernet over InfiniBand, abbreviated to EoIB, is an Ethernet implementation over the InfiniBand protocol and connector technology. Ethernet's implementation of The Internet Protocol Suite, usually referred to as TCP/IP, is different to some of the implementations used on top of the InfiniBand protocol in IP over IB (IPoIB). The Bandwidth of Ethernet over InfiniBand is 40 Gbps (QDR) .

Fibre Channel (FC) is a high-speed data transfer protocol (with successive technology generations running at 1, 2, 4, 8, 16, 32, 64, and 128 gigabit per second rates) providing in-order, lossless delivery of raw block data.

Fibre Channel HBAs, as well as CNAs, are available for all major open systems, computer architectures, and buses, including PCI and SBus. Some are OS dependent. Each HBA has a unique World Wide Name (WWN), which is similar to an Ethernet MAC address in that it uses an Organizationally Unique Identifier (OUI) assigned by the IEEE. However, WWNs are longer (8 bytes). There are two types of WWNs on an HBA; a World Wide Node Name (WWNN), which can be shared by some or all ports of a device, and a World Wide Port Name (WWPN), which is necessarily unique to each port.

光纤网卡和HBA卡的区别 (huawei.com) 

Dual port 16Gb FC host bus adapter card:

带风扇的网卡…… 我个人怀念阅报栏  :-)

光纤接口网卡报价及图片大全-ZOL中关村在线 

The small form-factor pluggable transceiver (SFP) module and its enhanced version SFP+, SFP28 and SFP56 are common form factors for Fibre Channel ports. SFP modules support a variety of distances via multi-mode and single-mode optical fiber as shown in the table below. The SFP module uses duplex fiber cabling that has LC connectors.

The LC connector was first developed by Lucent Technology for TelCo environment uses. Hence, LC stands for Lucent Connector mostly. In addition, LC can also stand for Little Connector and Local Connector.

LC Fiber Connector Definition, Types And User Guide (fiber-optic-solutions.com)

六级/考研单词: compute, data, fibre, manufacture, tertiary, passive, copper, meter, parallel, verb, abstract, vendor, hardware, stack, attribute, abbreviation, implement, protocol, suite, assign, dual