Fibre ChannelComputer storage networking technology Fibre ChannelLayer 4. Protocol mappingLUN maskingLayer 3. Common servicesLayer 2. NetworkFibre Channel fabricFibre Channel zoningRegistered state change notificationLayer 1. Data link8b/10b encodingLayer 0. Physical Fibre Channel (FC) is a high-speed data transfer protocol providing in-order, lossless delivery of raw block data.
Channel I/OIn computing, channel I/O is a high-performance input/output (I/O) architecture that is implemented in various forms on a number of computer architectures, especially on mainframe computers. In the past, channels were generally implemented with custom devices, variously named channel, I/O processor, I/O controller, I/O synchronizer, or DMA controller. OverviewMany I/O tasks can be complex and require logic to be applied to the data to convert formats and other similar duties.
ESCONESCON (Enterprise Systems Connection) is a data connection created by IBM, and is commonly used to connect their mainframe computers to peripheral devices such as disk storage, tape drives and IBM 3270 display controllers. ESCON is an optical fiber, half-duplex, serial interface. It originally operated at a rate of 10MB/s, which was later increased to 17MB/s. The current maximum distance is 43 kilometers.
Fibre Channel switchIn the computer storage field, a Fibre Channel switch is a network switch compatible with the Fibre Channel (FC) protocol. It allows the creation of a Fibre Channel fabric, that is the core component of a storage area network (SAN). The fabric is a network of Fibre Channel devices which allows many-to-many communication, device name lookup, security, and redundancy. FC switches implement zoning, a mechanism that disables unwanted traffic between certain fabric nodes.
Bus and TagBus and Tag is an IBM standard for a computer peripheral interface, and was commonly used to connect their mainframe computers to peripheral devices such as line printers, disk storage, magnetic tape drives and IBM 3270 display controllers. The technology uses two or three sets of thick, multi-connector copper cables, one or two sets, carrying data, called the bus, and the other set, carrying control information, called the tag.
Cyclic redundancy checkError-detecting code for detecting data changesA cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents.
Z/Architecturez/Architecture, initially and briefly called ESA Modal Extensions (ESAME), is IBM's 64-bitcomplex instruction set computer (CISC) instruction set architecture, implemented by its mainframe computers. IBM introduced its first z/Architecture-based system, the z900, in late 2000. Subsequent z/Architecture systems include the IBM z800, z990, z890, System z9, System z10, zEnterprise 196, zEnterprise 114, zEC12, zBC12, z13, z14, z15, z16, and z17.
IBM ZIBM Z is a family name used by IBM for all of its z/Architecturemainframe computers.
IBM System/390The IBM System/390 is a discontinued mainframe product family implementing ESA/390, the fifth generation of the System/360instruction set architecture. The first computers to use the ESA/390 were the Enterprise System/9000 (ES/9000) family, which were introduced in 1990. These were followed by the 9672, Multiprise, and Integrated Server families of System/390 in 1994–1999, using CMOS microprocessors.IBM mainframeIBM mainframes are large computer systems produced by IBM since 1952. During the 1960s and 1970s, IBM dominated the computer market with the 7000 series and the later System/360, followed by the System/370. Current mainframe computers in IBM's line of business computers are developments of the basic design of the System/360.
Communication protocolA communication protocol is a system of rules that allows two or more entities of a communications system to transmit information. The protocol defines the rules, syntax, semantics, and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages.
IBMInternational Business Machines Corporation, doing business asIBM (nicknamed Big Blue), is an American multinationaltechnology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Average.
Switched fabricSwitched fabric or switching fabric is a network topology in which network nodes interconnect via one or more network switches (particularly crossbar switches). Because a switched fabric network spreads network traffic across multiple physical links, it yields higher total throughput than broadcast networks, such as the early 10BASE5 version of Ethernet and most wireless networks such as Wi-Fi.*As an Amazon Associate I earn from qualifying purchases.