Glossary
You can find explanations on most of the commonly used technology words here!
A
» AAA
Authentication, Authorization and Accounting is a system in IP based networking for identifying the user, controlling the access to computer resources and to keep the track of user activity over a network.
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Apple Talk Address Resolution Protocol is an address mapping protocol which is used to map between Apple Talk node addresses at any protocol level.
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The weight of water vapour in a given amount of air.
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An alternating current (AC, also ac) is an electric current whose direction reverses cyclically, as opposed to direct current, whose direction remains constant. The usual waveform of an AC power circuit is a sine wave, as this results in the most efficient transmission of energy. However in certain applications different waveforms are used, such as triangular or square waves.
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Advanced Configuration and Power Interface is an open industry specification co-developed by HP, Intel, Microsoft, Phoenix and Toshiba for establishing industry-standard interfaces enabling OS-directed configuration, power and thermal management of mobile, desktop and server platforms.
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Represents the range of addresses available for a given application
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Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. It does this by utilizing frequencies that are not used by a voice telephone call. A splitter - or microfilter - allows a single telephone connection to be used for both ADSL service and voice calls at the same time. Because phone lines vary in quality and were not originally engineered with DSL in mind, it can generally only be used over short distances, typically less than 4km.
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Automated Fingerprint identification System is a type of biometric system which uses digital imaging technology to capture, store and compare fingerprint data to determine the identity of an individual.
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Hot/cold aisle (or hot aisle/cold aisle) is a method of cooling servers in data centers in which every aisle between rows of racks is bounded with exclusively hot-air outlets or exclusively cool-air intakes. Air is brought into the cool aisles from underneath and exhausted from the hot aisles overhead. This produces constant air circulation through the racks, provided there are no "holes" through which cool air can leak without encountering hardware.
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Advanced Intelligence Tape is a magnetic tape and drive system for storing large amounts of data.
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Abbreviated as Ah; is defined as a current of one ampere flowing for one hour.
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American National Standard Institute is a voluntary organization which promotes the standardization process for the computer industry.
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Apparent Power is defined as the power obtained by multiplying the current and voltage applied to the load.
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is the top layer of the seven-layer OSI (Open System Interconnection) model to handle issues like network transparency, resource allocation and problem partitioning.
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In n-tier architecture an application server is a server that hosts an API to expose Business Logic and Business Processes for use by other applications. The term can refer to:
The Services that are made available by the server
The Computer Hardware on which the Services are deployed
The Software framework used to host the Services such as JBoss application server or Oracle Application Server
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» More detail
is storage of data which may not be required for immediate use, but required for future retrieval purposes.
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American Standard Code for Information Interchange (ASCII), pronounced “aeski”is a character encoding based on the English alphabet, with each letter assigned a number from 0 to 127. For example, the ASCII code for uppercase M is 77. Most computers use ASCII codes to represent text, which makes it possible to transfer data from one computer to another.
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Application Specific Integrated Circuit, as the name suggests, is a circuit designed for specific application which is typically built by using building blocks of existing circuit designs.
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Asynchronous Transfer Mode is a network technology that utilizes fixed length packets to carry different types of traffic.
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Automatic Transfer Switch is a switch which allows automatic switching of the source of electric power from a primary source to a secondary source.
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American Wire Gauge is a U.S. standard set of non-ferrous wire conductor sizes.
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B
» Back Plane
A circuit board containing sockets into which other circuit boards can be plugged in. In the context of PCs, the term backplane refers to the large circuit board that contains sockets for expansion cards.
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Online protection system that automatically backs up small businesses data to an off-site location and secures it through encryption
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Backplanes are often described as being either active or passive. Active backplanes contain, in addition to the sockets, logical circuitry that performs computing functions. In contrast, passive backplanes contain almost no computing circuitry.
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Indicates the amount of data that can be sent in a time period.
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Broadband Global Area Network is a mobile communications system which provides seamless network coverage almost anywhere on the earth’s surface. One such is The Inmarsat Broadband Global Area Network which was launched over the I4 (Inmarsat-4) satellite system
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Business Impact Analysis is a process of identifying the key business processes and technology components that would suffer if a system or a set of business processes failed to function properly.
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Biometrics are automated methods for uniquely recognizing a particular person based on intrinsic physical or behavioral traits
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Business Process Management is the process of automating those employee activities with a view to improve organizations business processes.
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Business process outsourcing (BPO) is a form of outsourcing which involves the contracting of the operations and responsibilities of a specific business function to a third-party service provider.
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A bridge is a way to connect two Ethernet segments together in a protocol independent way. Packets are forwarded based on Ethernet address, rather than IP address (like a router). Since forwarding is done at Layer 2, all protocols can go transparently through a bridge.
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is a condition of reduction in the normal power line voltage being supplied by the local utility or generating equipment when demand exceeds the supply.
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Biritsh Thermal Unit is the standard unit used to measure the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit at a constant pressure of one atmosphere.
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is a condition which occurs when a program or process tries to transfer more data to a buffer (temporary data storage area) than it was designed to contain. As a result of which, the additional data overflows into adjacent buffers which can result in the corruption of data held in those locations.
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is a computer based control system used for monitoring, operating and managing the building’s mechanical and electrical systems.
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In computer architecture, a bus is a subsystem that transfers data between computer components inside a computer or between computers. Unlike a point-to-point connection, a bus can logically connect several peripherals over the same set of wires. Each bus defines its set of connectors to physically plug devices, cards or cables together.
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Business Continuity is the activity performed by an organization to ensure that critical business functions will be available to customers, suppliers, regulators, and other entities that must have access to those functions
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C
» Cable
Assembly of one or more conductors within a protective sheath.
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is a rigid structural system used to securely fasten or support cables and raceways.
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A cache (pronounced CASH) is an area where information is stored which is likely to be accessed in the near future.
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Cold Aisle Containment System is typically deployed in data centers which encloses the cold aisle and prevents hot air short circuits and thereby improving the efficiency of the cooling system.
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Corporate Average Data Center Efficiency is a metric used to measure the total data center efficiency.
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Physically securing the servers and technical equipments in data centre by means of a modular wire partition.
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is a market based policy which aims at reducing carbon dioxide and other greenhouse gas emissions in a cost effective manner.
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It is the measure of total amount of Greenhouse Gases produced as a result of day to day human activities, having an adverse effect on the environment and climatic changes.
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A company , process or entity producing zero carbon emissions by obtaining energy from renewable sources either directly by generating it or by selecting an approved green energy provider and also using low carbon alternative fuels such as bio-fuels is said to be carbon neutral.
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is an emission reduction credit that an individual or an organization can purchase to achieve carbon neutrality.
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Category 5 cable, commonly known as Cat 5, is a twisted pair (4 pairs) cable type designed for high signal integrity. Many such cables are unshielded but some are shielded. Category 5 has been superseded by the Category 5e specification. This type of cable is often used in structured cabling for computer networks such as Ethernet, and is also used to carry many other signals such as basic voice services, token ring, and ATM (at up to 155 Mbit/s, over short distances). CAT6 is an Ethernet cable standard defined by the Electronic Industries Association and Telecommunications Industry Association (commonly known as EIA/TIA). CAT6 is the 6th generation of twisted pair Ethernet cabling.
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Combined Cooling, Heating and Power (CCHP) - Integrated high-efficiency, assured power solutions comprising various combinations of microturbines, fuel cells, chillers and heat exchangers powered by natural gas and exhaust energy
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A Compact Disc (also known as a CD) is an optical disc used to store digital data, originally developed for storing digital audio.
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Content Delivery Network is a system of web servers which are networked together to deliver web content more efficiently to users.
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Cubic feet per minute is a unit used to measure the velocity of air through a space or delivery system.
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is a process for planning, coordinating and managing the activities of data center.
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A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.
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Combined Heat and Power Generation (CHP) or Co-generation
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is an energy conversion process, where electricity and useful heat are produced simultaneously in one process. CHP heat can be used either for district heating or for industrial processes.
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A circuit breaker is an electrical switch used to protect an electrical circuit from overloads or short circuits.
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A clean room is a enclosed area in which air quality, temperature and humidity are highly maintained in order to protect sensitive equipments from contamination.
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Performing enormous numbers of scientific calculations in hundreds or thousands of idle machines within an enterprise or in the Internet.
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Cloud computing is accessing resources and services over a network rather than having local servers or devices to handle applications.
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Cluster computing is the process of linking two or more devices such as computers, storage devices etc., into a network to form a single highly available system.
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is primarily used for transmission of high –frequency signals, consisting of solid copper or copper-clad-steel conductor surrounded by a non-conductive di-electric insulating material onto a common axis.
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Cogeneration is the simultaneous generation of electricity and heat power, in a single process from the same fuel. Cogeneration is not new. Thomas Edison's first electric generating plant used combined heat and power generation
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A cold aisle is defined as having perforated floor tiles that allow cooling air to come up from the plenum under the raised floor. In the cold aisle, the equipment racks are arranged face to face so the cooling air discharged up through the perforated floor tiles is sucked into the face of the computer hardware and exhausted out the back of the equipment rack onto the adjacent hot aisles.
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A cold server is a backup server which is turned on only when the disaster arises or when the software needs to be installed, updated or configured. No other processing or production is done on this server.
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Colocation is a type of hosting where customers pay to have their own servers hosted within a data centre. Virtualization is an example of colocation where a host server provides a virtual hardware or software platform for running one or more instances of software on a (potentially different) platform.
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is an essential component of air conditioning system which maintains adequate pressure to cause refrigerant to flow in sufficient quantities in order to meet the cooling requirements of the system.
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Copper is a ductile metal with excellent thermal and electrical conductivity.
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is a network that is contained within an enterprise. It consists of many interconnected Local Area Networks through a limited geographical area.
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A central processing unit (CPU) is a machine that can execute computer programs
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A computer room air conditioning (CRAC) unit is a device that monitors and maintains the temperature, air distribution and humidity in a network room or data center
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D
» Dark Fiber
Dark Fiber refers to fiber-optic cable infrastructure that is in place, but not being used.
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Direct Access Storage is a type of Computer Storage that enables quick access to the data through the individual server to which it is connected. It is managed separately and cannot be shared.
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refers to data validation. Any changes can be made by a valid authorized process.
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refers to the process of movement of data from one format to another or from one storage device to another.
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refers to the process of frequent back up of data from a database or server to another database for the purpose of recovery in case of a disaster such as a device or a network going down.
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A collection of information/records or data that can be easily accessed managed and updated.
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is a message sent over the network between two communicating entities whose arrival, arrival time and content are not guaranteed.
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Data Base Management System is a collection of software applications that help to store, modify or extract information from a database.
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Electrical current whose magnitude and direction stay constant.
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Data Centre Infrastructure Efficiency is defined as the ratio of IT equipment power to the total facility power
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Distributed Database Management System is an software which manages the collection of data physically distributed over a network.
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Double-Data-Rate Synchronous Dynamic Random Access Memory, or DDR RAM for short, is a type of very fast computer memory. DDR RAM is based on the same architecture as SDRAM, but utilizes the clock signal differently to transfer twice the data in the same amount of time.
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is a type of internet hosting where the client can lease an entire server for his own exclusive use, instead of sharing server space on a virtual server.
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is the process of removing moisture from air.
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is the temperature at which air can no longer hold the water vapour and the vapour condenses into water.
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is the ability to restore work or operations critical to any organisations after a natural or human induced disaster.
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Disk Arrays are storage systems consisting of multiple physical and independent hard disk drives for advanced data control and security.
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Data Lifecycle Management is a policy based approach which helps to identify and align the data within a tiered storage infrastructure.
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False or suspended ceiling built lower than original ceiling in a modular grid arrangement.
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is the temperature of the air measured at ambient conditions.
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Digital Subscriber line is a technology used to transmit high speed internet connectivity over normal telephone lines.
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Dual tone multi frequency signalling is a method for instructing a telephone switching system of the telephone number to be dialed, or to issue commands to switching systems or related telephony equipment.
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six core processor launched by Intel is named Dunnington which is based on penryn architecture.
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Digital Video Disc is an optical disk technology with storage capacity of 4.7gigabyte.
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e
» e-Cycling
is the practise of reusing or donating for reuse, the electronic components or equipments and thereby reducing the environmental impacts.
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E
» E1
is a European digital transmission format which carries data at a rate of 2.048 million bits per second and can carry 32 channels of 64 Kbps each.
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Extended Binary Coded Decimal Interchange Code was developed in 1963 by IBM as an extension to the older Binary Coded Decimal (BCD) standard.
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is a mechanical device commonly used in data centers as a compliment or replacement of cooling devices such as CRAC’s or chillers to reduce energy consumption.
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Environmental Protection Agency is an independent federal agency established in 1970 to protect, enhance and maintain environmental quality and to regulate activities that have significant polluting potential.
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Electronic Product Environmental Assessment Tool is a system which helps purchasers in the public and private sectors to evaluate, compare and select electronic components such as desktop computers based on their environmental attributes.
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An event is a user action like clicking a link, a button or other control on web page as defined by a portlet developer.
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F
» Facilities Management
This is a process in which one firm enters into contract with another for maintaining the information systems of the contracting firm.
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Fan is a device which is used to induce air flow for cooling purpose.
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Fibre channel over IP is used to provide point to point connections between physically separated SAN’s over an IP network.
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A file server is a computer which provides central storage and management of data files so that the workstations on a network can have controlled access to shared resources.
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is a activity concerned with controlling and extinguishing a fire followed by its detection.
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is a rotating mass which stores energy in the form of rotational kinetic energy and supplies it to a given system.
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also called as heptafluoropropane HFC227 or HFC 227ea is a fire suppression agent that is quick, clean and effective widely used for computer room applications.
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File Transfer Protocol is a protocol for exchanging files over the internet.
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Foil screened twisted pair cable is a cable containing multiple pairs of copper wire enclosed in a sheath of aluminium foil.
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G
» Gas
Gas is a state of matter in which the particles have no fixed shape or volume.
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Graphical Processing Unit is a single chip processor used primarily for computing 3D functions, as it enables to run high definition graphics on Computer System.
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Green Grid is a global organisation dedicated for defining meaningful and user centric models, developing standards, responding to the growing requirements, new technologies, and best practices with a goal of increasing energy efficiency in the IT sector.
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is the act of sharing tasks over multiple computers spread over large geographical distances ranging from data storage to complex calculations which are too intensive for any stand-alone machine.
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is the act of sharing tasks such as data storage or complex calculations over multiple computers in a network, which can be spread over large geographical distances.
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is a method of linking independent storage nodes for storing data which helps in easy management, fault tolerance and access at the file and block level.
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Ground Cooling is a technique of drawing external air into the building/plant via ground heat exchangers which could be wither air-to-ground or water-to-ground.
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Graphical User Interface pronounced GOO-ee is a user interface which is based on graphics such as icons, pictures or menus instead of complex command languages.
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H
» HACS
Hot Aisle Containment System is typically deployed in data center which encloses the hot aisle space and prevents the hot air escaping into the hot cold aisle, thereby improving the efficiency of the cooling system.
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is bromine containing compounds which are electrically non –conducting, volatile fire extinguishing clean agents.
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Heartbeat is a program that runs specialized scripts automatically whenever a system is initialized or rebooted. The Linux-HA heartbeat code is used for building highly available failover clusters
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is a device which is used to transfer heat from one fluid to another separated by a solid wall to prevent them from mixing.
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is a high tech energy saving device that pumps heat from a cold reservoir and delivers heat to the hot reservoir.
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Hybrid Fiber Co-axial is a telecommunication industry term for delivering broadband content such as voice, data, video and other services through coaxial and fiber optic cable.
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It can be defined as a service dedicated to provide infrastructure necessary to make services available to remote users which might include web hosting for websites, email hosting for email database hosting for database and so forth.
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Also known as Web Hosting is the service provided by the vendor which offers a physical location for the storage of web pages and files.
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It is the aisle in which hot air is exhausted from computer equipments.
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When It equipments dissipate enormous amount of heat and this gets clustered together in the data centre, it leads to the generation of hot spots.
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is a device used for connecting many Ethernet devices forming a single network segment.
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It is the amount of water vapour present in air.
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It is an acronym for heating, ventilating, and air conditioning aimed at providing an architectural structure with a high quality of indoor air, excellent thermal properties and competitive installation costs.
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is defined as the state in which the number of devices, nodes or applications connected to the network far exceeds the demand.
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I
» IANA
Internet Assigned Numbers Authority is an organisation responsible for the global coordination of DNS root, IP addressing and other Internet protocol resources.
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The Institute of Electrical and Electronics Engineers defines itself as The world's leading professional association for the advancement of technology
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802.11 is an evolving family of specifications for wireless local area networks (WLANs) developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). There are several specifications in the family and new ones are occasionally added.
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IEEE 802.1p standard, Traffic class expediting and dynamic multicast filtering. Descibes important methods for providing QoS at MAC level.
The IEEE 802.1Q standard defines an architecture for Virtual Bridged LANs, the services provided in Virtual Bridged LANs and the protocols and algorithms involved in the provision of those servises.
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Internet Engineering Task Force is an international community of network designers, operators, vendors and researchers who defines standard internet operating protocols and make contributions to the engineering and evolution of the internet and its technologies.
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Internet Fibre Channel Protocol allows for carrying fibre channel traffic over IP based networks. It wraps the fibre channel data in IP packets and assigns IP address to each storage device in SAN.
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is an industry standard, channel based, switched fabric, interconnect architecture for servers that change the way data centres will be built, deployed and managed.
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is a system of interconnected computer networks which exchange data using a common software standard.
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Internet Protocol Security is as set of protocols developed by the IETF to provide encryption and authentication over the internet.
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IP storage is used for tunneling data between SAN facilities over IP networks.
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IR wireless is an infrared technology that allows computing devices to communicate or convey data through infrared radiation.
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i
» iSCSI
Internet Small Computer System Interface is an IP based protocol which is used to facilitate data transfer over intranets and manage storage over long distances.
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I
» ISO
International organisation for standardization is a worldwide federation of national standard institutes of 157 countries forming a bridge between private and public sectors.
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Internet Service Provider is a company that offers internet access to the companies or individuals.
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J
» Jacket
also called sheath is the outer coating of a data cable.
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Jitter is unwanted variations in amplitude, signal strength, and other elements of such waves in electronics and telecommunications.
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K
» KVM
KVM switch is a hardware device that allows a user to access and control multiple computers from a single keyboard, video display unit and mouse.
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L
» LAN
A Local Area Network is a high speed communication system connecting computers and other data processing devices to a central server to a small geographic area such as a workgroup, department or a building.
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is a short period of delay which occurs while sending a packet of data from one end of a connection to its receipt of the same data at the destination.
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In networking, latency is defined as the time taken for a packet of data to travel from source to destination.
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refers to a cooling technology which utilizes liquids such as water for heat removal purposes from components such as computer processors.
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is a refrigerant line connecting the output side of the condensing coil to the input side of the expansion valve.
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M
» MAID
Massive Array of Inexpensive Disks is an array of disks in which the disks which are not in use are turned on only when an application requires access to data.
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is a high performance computer made for high volume, processor-intensive computing.
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is a type of hosting wherein the service provider owns the responsibility of maintainance, upgradations and proper functioning of the server/software.
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term memory is usually used as shorthand for physical memory, which refers to the actual chips capable of holding data
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A Management Information Base is a database containing the information pertinent to the gateway running CMOT, SNMP, or CMIP network management protocols.
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is a low emission combustion turbine that generates power between 25kW and 500kW used in homes or commercial establishments.
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is the automated process of writing data to two drives simultaneously.
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is a networking device that converts analog and digital data for computer- to-computer communication.
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Multi Protocol Label Switching defines a mechanism for packet forwarding in network routers. It applies labels to packets providing QOS and advance route selection functions.
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Mean Time Between Failures is the measure of the average elapsed time a device functions before failure. Also expressed as the ratio of total hours of operation of the product to number of product failures.
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Mean Time To Repair is the average time taken by the device to recover from any breakdown.
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N
» N+1
is a parallel redundant configuration consisting of paralleling multiple, same size modules onto a common output bus.
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Network Attached Storage is the name given to data storage technology wherein storage devices accessed over a computer network (usually TCP/IP), rather than directly being connected to the computer (internal hard drives or external USB/SCSI drives) enabling centralized data access and storage to heterogeneous network clients.
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Network Address translation is a process where a network device enables multiple computers in a network to connect with the internet through a single shared IP address.
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To allow or augment the natural movement of cooler air from exterior, shaded areas of a building through or around a building.
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O
» OASIS
Organisation for the Advancement of Structured Information Standards is a non-profit consortium that drives the development, convergence and adoption of open standards for the global information society.
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is computer software whose source code is available under a license that permits users to use, change, and improve the software and to redistribute it in modified or un-modified form.
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is a software which controls execution of computer programs and is responsible for everything from the control and allocation of memory to recognizing input from external devices and transmitting output to computer displays, managing files on computer hard drives and control peripherals, like printers and scanners.
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is a solid rod of transparent material, as fine as a strand of human hair, through which light is reflected to transmit image or data from one end to another.
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is storage of data on a optically readable medium for archival or back up purposes.
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P
» P2V
Physical to Virtual is a term that refers to the migration of a physical server’s operating system, application programs and data from a physical server to a virtual machine.
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Parallel Advanced Technology Attachment is an IDE standard for connecting storage devices like hard drives and optical drives to the motherboard. PATA generally refers to the types of cables and connections that follow this standard
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Power Distribution Unit is an electrical device used for controlling and distributing power to multiple devices.
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are Latent heat storage units which are used to store the latent heat absorbed in the material during phase transition
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is a thin rack mounted enclosure normally one or two rack units in height which hold some network device or server, so called as it is the size and shape of a pizza box.
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Point of sale refers to the capturing of data and customer payment information at a physical location when goods or services are bought and sold.
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is a reference to a source of electrical power. A device or system that supplies electrical or other types of energy to an output load or group of loads is called a power supply unit.
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Power usage effectiveness is defined by the Green Grid as the ratio of Total facility Power-power measure at the utility meter (power that is dedicated solely to the data centre-such as UPS, PDU’s CRAC’s etc.) to IT Equipment Power-load that is associated with all the IT equipment such as computer, storage and network equipment along with supplemental equipment such as KVM switches, monitors etc
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Q
» QoE
Quality Of Experience is defined as the subjective measure to determine how well that network is satisfying the end user's requirements.
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Quality Of Service is defined as measure of performance in data communication systems. It is a network or system agreement that specifies uptime, response time, acceptable error rates and other conditions for a given service and designated user base.
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R
» Rack
is a system for mounting various electronic modules stacked one above the other.
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Floor which is built at a certain height above the true floor, supported by metal grid to allow space for cabling, wiring, piping etc., typically used for data centre applications.
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Acronym for Renewable Energy Credits, or Renewable Energy Certificates, are tradable commodities to support renewable energy generation. For every REC purchased, one megawatt-hour (MWh) of renewable electricity is generated and delivered to the power grid.
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is duplication of components in a critical system to ensure uninterrupted operation in case of a failure.
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returning something back to its original or undamaged state. With regard to a window, restore can mean two things: Making a window visible again after minimizing it, or returning a window to its regular size
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Request For Comments is the mechanism through which the IEFT (Internet Engineering Task Force) discuss on many aspects of computer networking, including protocols, procedures, programs, and concepts, as well as meeting notes and opinions
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Radio Frequency Identification is a system for remotely storing and retrieving data. It uses electronic tags for storing data, made up of an RFID chip attached to an antenna.
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is a networking device connected to at least two networks for forwarding data packets to their destinations, based on their addresses.
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Recovery Point Objective is the maximum acceptable amount of data loss an organization can sustain after an unplanned event.
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is a standard interface for data terminal equipment and is one of the most widely used standards for serial data communication.
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Recovery Time Objective is the maximum acceptable length of time within which the business must be restored.
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S
» SaaS
Software as a Service is an application hosted on a remote server and accessed through the Internet.
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is a high-speed network specifically dedicated to the task of transporting data for storage and retrieval.
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Serial Advanced Technology Attachment is an IDE standard for connecting optical drives and hard drives into computer systems.
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A server is primarily a program that runs on a machine, providing a particular and specific service to other machines connected to the machine on which it is found as a dedicated Computer or device
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protecting the circuit from unwanted noise or interference of signals from outside.
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Service Level Agreement is an agreement between the service provider and the end user which contains a specified level of customer support options, service, and penalty provisions in case of delayed or no servcie, which are agreeable and beneficial to both the service provider and the end-user.
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Simple Network Management Protocol is a protocol for network management defined by IETF to communicate with network elements.
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Service Oriented Architecture represents a new generation distributed computing platform based on the request/reply design paradigm for synchronous and asynchronous applications
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Solid State Disk d is a high-performance plug-and-play storage device that uses memory chips instead of moving parts for data storage.
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Space for holding the data in a computer memory or on a magnetic tape or disk.
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refers to all of the cabling and components installed in a logical and organized way.
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Support Vector Machine is a computer algorithm that learns by example to assign labels to objects.
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is a network device that selects a path or circuit for sending a unit of data to its next destination.
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T
» T1
is a means of transporting voice or data traffic at a rate of 1.544 Mbps
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A magnetically coated strip of plastic used for storing computer information, audio or video data.
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measure of the average heat or thermal energy of the particles in a substance.
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Range of temperature involved during heating process.
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Tenanting allows for hosted services to be offered to multiple customers using the same communications platform.
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is an enclosure that contains and physically mounts all of the actual computer components like motherboard, power supply, cd, floppy or other parts.
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U
» U - Unit
Rack Unit or “U” is a unit of measure used to describe the height of computer equipments like server, router, etc., which are to be housed in a 19” rack.1U is equal to 1.75 inches (44.45 millimeters).
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User Interface is a set of commands through which a user communicates with a program.
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Uninterruptable Power Supply is a device which is intended for providing uninterruptable and clean power to the load to which it is connected.
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Universal Serial Bus is a plug and play hardware interface that allows the users to attach secondary hardware to the computer.
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is a form of computer service in which customers receive computing resources from a service provider and pay as per the usage.
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V
» V2P
Virtual to physical is the process of migrating Operating System, application program and data from a virtual machine to a physical machine.
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is a high level business model of systematically examining the activities of a firm for competitive advantage.
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Very Early Smoke Detection Agent is a smoke detector which detects smoke at an earlier stage and provides earliest possible warning of a fire.
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is a technology in which multiple virtual machines, with heterogeneous operating systems, run in isolation, side-by-side on the same physical machine. Each virtual machine has its own set of virtual hardware (e.g. RAM, CPU, NIC, etc.) upon which an operating system and applications are loaded ,multiple operating systems and associated server application run on a single piece of hardware or server.
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W
» WAN
Wide Area Network consists of two or more Local Area Network which span over a large geographical area.
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Water cooling is a method of heat removal from components. As opposed to air cooling, water is used as the heat transmitter. Water cooling is commonly used for cooling internal combustion engines in automobiles and large electrical generators. Other uses include cooling the lubricant oil of pumps; for cooling purposes in heat exchangers; cooling products from tanks or columns, and recently, cooling of various major components inside top-end personal computers. The main mechanism for water cooling is convective heat transfer.
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Water Cooling is the process of removal of heat from the computer components using water as a cooling medium.
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» Xeon
is a high end Intel CPU chip from Pentium family designed for servers and fast workstations. Xeon chip speeds start at 400 MHz.
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