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Duplication of critical components to increase reliability of a system
In engineering and systems theory, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing
Redundancy_(engineering)
Disciplines into which the field of engineering is conventionally divided
mathematics Engineering notation Engineering optimization Engineering statistics Front-end engineering Knowledge engineering Life-cycle engineering Redundancy (engineering)
List_of_engineering_branches
Defined levels of resiliency and redundancy for IT infrastructure
Data center tiers are defined levels of resiliency and redundancy for IT facility infrastructure. They are widely used in the data center, ISP and cloud
Data_center_tiers
Topics referred to by the same term
function Redundancy (engineering), the duplication of critical components or functions of a system with the intention of increasing reliability Redundancy (information
Redundancy
Network protocol for Ethernet that provides seamless failover
High-availability Seamless Redundancy (HSR) is a network protocol for Ethernet that provides seamless failover against failure of any single network component
High-availability Seamless Redundancy
High-availability_Seamless_Redundancy
Method for increasing reliability
computing, triple modular redundancy, sometimes called triple-mode redundancy, (TMR) is a fault-tolerant form of N-modular redundancy, in which three systems
Triple_modular_redundancy
Principle of software development
normalization and denormalization Disk mirroring Loop unrolling Redundancy (engineering) Rule of three (computer programming) Separation of concerns Single
Don't_repeat_yourself
Topics referred to by the same term
Modular redundancy may refer to: Dual modular redundancy, in reliability engineering where system components are duplicated Triple modular redundancy, in
Modular_redundancy
Surplus computer data for error correction
In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits
Data_redundancy
Error-detecting code for detecting data changes
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital
Cyclic_redundancy_check
Interdisciplinary study of systems
science Pattern language Recursion (computer science) Reductionism Redundancy (engineering) Reversal theory Social rule system theory Sociology and complexity
Systems_theory
Systems with high up-time, a.k.a. "always on"
reliability engineering that can help achieve high availability. Elimination of single points of failure. This means adding or building redundancy into the
High_availability
Model used in risk analysis
ultimate causation Proximate cause Redundancy (engineering) Root cause analysis System accident Systems engineering Systems modelling Reason, James (1990-04-12)
Swiss_cheese_model
Inter-router protocol that automatically assigns routers to hosts
The Virtual Router Redundancy Protocol (VRRP) is a computer networking protocol that provides for automatic assignment of available Internet Protocol (IP)
Virtual Router Redundancy Protocol
Virtual_Router_Redundancy_Protocol
1930-35 industrial disaster in West Virginia, U.S.
journal. 54 (3): 123–141. doi:10.1353/mos.2021.0031. ISSN 1925-5683. Engineering News-Record [Hawks Nest contractor replies]. 1936. pp. 261–262. Crandall
Hawks_Nest_Tunnel_disaster
Number of independent parameters needed to define the state of a mechanical system
the analysis of systems of bodies in mechanical engineering, structural engineering, aerospace engineering, robotics, and other fields. As an example, the
Degrees of freedom (mechanics)
Degrees_of_freedom_(mechanics)
instructor is the predominant pilot. Index of aviation articles Redundancy (engineering) "Regulatory Brief -- FAA issues new interpretation of "dual controls""
Dual_control_(aviation)
Identification, evaluation and control of risks
USA Optimism bias Pest risk analysis Precautionary principle Redundancy (engineering) Reference class forecasting Representative heuristic Risk appetite
Risk_management
System which must be highly reliable
or accidental loss. Reliability theory Reliable system design Redundancy (engineering) Factor of safety Formal methods Hinchey, Mike; Coyle, Lorcan (2010)
Critical_system
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Potty parity in the United States
Potty_parity_in_the_United_States
United States legal concept concerning employment
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Hostile_work_environment
which are standardized as much as possible. Real-time computing Redundancy (engineering) Carrier system High availability What's all the fuss about network
Carrier_grade
Message encoded with more bits than needed
In information theory, redundancy (redundation) measures the fractional difference between the entropy H(X) of an ensemble X, and its maximum possible
Redundancy (information theory)
Redundancy_(information_theory)
In software engineering, experimenting with the product to test extreme situations
happen frequently has created a strong alignment among engineers to build redundancy and process automation to survive such incidents, without impacting the
Chaos_engineering
guarantees. Redundancy (engineering) Triple modular redundancy Data redundancy Fault tolerant design Reliability engineering Safety engineering N-Version
N-version_programming
Component whose failure will disrupt the entire system
in the system. Systems can be made robust by adding redundancy in all potential SPOFs. Redundancy can be achieved at various levels. The assessment of
Single_point_of_failure
Workplace area
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Break_room
Agency of the European Union
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
European Agency for Safety and Health at Work
European_Agency_for_Safety_and_Health_at_Work
Form of resilience with independent backup components
Redundancy is a form of resilience that ensures system availability in the event of component failure. Components (N) have at least one independent backup
N+1_redundancy
Engineering discipline
reliability of the system as a whole (redundancies, barriers, etc.). Safety engineering and reliability engineering have much in common, but safety is not
Safety_engineering
Computer networking protocol
The Common Address Redundancy Protocol or CARP is a computer networking protocol which allows multiple hosts on the same local area network to share a
Common Address Redundancy Protocol
Common_Address_Redundancy_Protocol
Sub-discipline of systems engineering that emphasizes dependability
development cycle (from early life to long-term). Redundancy can also be applied in systems engineering by double checking requirements, data, designs,
Reliability_engineering
Telecommunications loop network topology
new technology for packet-switched self-healing ring networks. Redundancy (engineering) Token Ring "Undersea Fibre Optic Cables". F S Cables. Retrieved
Self-healing_ring
Engineering applied to artificial intelligence
intelligence engineering (AI engineering) is a technical discipline that focuses on the design, development, and deployment of AI systems. AI engineering involves
Artificial intelligence engineering
Artificial_intelligence_engineering
System whose failure would be serious
reactions Redundancy (engineering) – Duplication of critical components to increase reliability of a system Real-time computing Reliability engineering – Sub-discipline
Safety-critical_system
Type of technical drawing used to define requirements for engineered items
dimensions is usually only specified in one place on a drawing, avoiding redundancy and the possibility of inconsistency. Suitable tolerances are given for
Engineering_drawing
Term in reliability engineering
achieve 99.9023% availability. Note that redundancy doesn’t always lead to higher availability. In fact, redundancy increases complexity, which in turn reduces
Availability
Profession
Biomedical engineering Chemical engineering Fire protection engineering Hazard Identification Life-critical Redundancy (engineering) Reliability engineering Safety
Safety_engineer
In reliability engineering, dual modular redundancy (DMR) is when components of a system are duplicated, providing redundancy in case one should fail.
Dual_modular_redundancy
Exposure to dangerous levels of airborne contaminants
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Immediately dangerous to life or health
Immediately_dangerous_to_life_or_health
Quality of robustness of computer hardware
Architecture (MCA) Machine-check exception (MCE) High availability (HA) Redundancy (engineering) Integrated logistics support RAMS (reliability, availability,
Reliability, availability and serviceability
Reliability,_availability_and_serviceability
U.S. rating of respirators
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
NIOSH_air_filtration_rating
Qiaobing (September 2008). Endpoint Handlespace Redundancy Protocol (ENRP) (Report). Internet Engineering Task Force. Thomas Dreibholz's Reliable Server
Endpoint Handlespace Redundancy Protocol
Endpoint_Handlespace_Redundancy_Protocol
Computer network protocol
increased by adding redundancy for critical elements. A distinction can be made between system and media redundancy. System redundancy can also be implemented
Profinet
Infrastructure design able to absorb damage without suffering complete failure
describe and quantify resilience. In engineering, resilience is characterized by four Rs: robustness, redundancy, resourcefulness, and rapidity. Current
Resilience (engineering and construction)
Resilience_(engineering_and_construction)
Pieces of legislation for workers rights
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Right to sit in the United States
Right_to_sit_in_the_United_States
Fault-tolerant computer system
that run the same set of operations at the same time in parallel. The redundancy (duplication) allows error detection and error correction: the output
Lockstep_(computing)
Medical condition
Mortality in the US: A Report From the National Academies of Sciences, Engineering, and Medicine". JAMA. 325 (20): 2045–2046. doi:10.1001/jama.2021.4073
Occupational cardiovascular disease
Occupational_cardiovascular_disease
16 contacts (front (make) and back (break)) - about half size Redundancy (engineering) Double insulation Single-wire earth return Hidden, Anthony (1989)
Double_switching
Policies granting the right to be granted suitable seating at work
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Right_to_sit
Manipulation of an organism's genome
Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology
Genetic_engineering
Reliable digital data delivery methods on unreliable channels
Marcel J. E. Golay. All error-detection and correction schemes add some redundancy (i.e., some extra data) to a message, which receivers can use to check
Error detection and correction
Error_detection_and_correction
Field concerned with the safety, health and welfare of people at work
inadequate support during significant organizational changes such as redundancy and restructuring. Employers covered under the Model WHS Act have a duty
Occupational safety and health
Occupational_safety_and_health
Redundancy of codons in the genetic code
Degeneracy or redundancy of codons is the redundancy of the genetic code, exhibited as the multiplicity of three-base pair codon combinations that specify
Codon_degeneracy
Electronic moving image
group of pictures (GOP) to reduce spatial and temporal redundancy. Broadly speaking, spatial redundancy is reduced by registering differences between parts
Video
Educational Institute in the US
reliable high-speed network design and redundancy are all important for cyber attack prevention; computer engineering faculty work with the Center for Infrastructure
UTSA College of Engineering and Integrated Design
UTSA_College_of_Engineering_and_Integrated_Design
Study of the properties of codes and their fitness
reliable data transmission methods. This typically involves the removal of redundancy and the correction or detection of errors in the transmitted data. There
Coding_theory
Former suspension bridge (stood 1928–1967)
eyebars per link. The eyebars in the Silver Bridge offered little to no redundancy, as each chain link consisted of just two eyebars in parallel. (Each bar
Silver_Bridge
Overview of computer engineering topics
multithreading Dependability Active redundancy Dual modular redundancy Triple modular redundancy High-availability Seamless Redundancy N-version programming RAID
Computer engineering compendium
Computer_engineering_compendium
System strength beyond planned load
design – Design method in structural engineering Probabilistic design – Discipline within engineering design Redundancy (total quality management) – Approach
Factor_of_safety
Transmission Control Protocol technology
connection to use multiple paths to maximize throughput and increase redundancy. In January 2013, the IETF published the Multipath specification as an
Multipath_TCP
Academic journal
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Scandinavian Journal of Work, Environment & Health
Scandinavian_Journal_of_Work,_Environment_&_Health
Linear model of communication
difficulty in this regard is that noise may distort the signal. They discuss redundancy as a solution to this problem: if the original message is redundant then
Shannon–Weaver_model
Technology to correct measurements in industrial processes
specifically called "spatial redundancy", "analytical redundancy", or "topological redundancy". Redundancy can be due to sensor redundancy, where sensors are duplicated
Data validation and reconciliation
Data_validation_and_reconciliation
Scientific study of digital information
data compression removes as much redundancy as possible, an error-correcting code adds just the right kind of redundancy (i.e., error correction) needed
Information_theory
Design concept
Active redundancy is a design concept that increases operational availability and that reduces operating cost by automating most critical maintenance actions
Active_redundancy
Way to guarantee safety by means of multiple and redundant layers of protection
capability to safely shutdown. Defence in depth may mean engineering which emphasizes redundancy – a system that keeps working when a component fails –
Defence in depth (non-military)
Defence_in_depth_(non-military)
Efforts to improve the mental and physical well-being of workers
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Workplace_health_promotion
Design feature or practice
systems can never be made fail-safe, as continuous availability is needed. Redundancy, fault tolerance, or contingency plans are used for these situations (e
Fail-safe
New Zealand health and safety magazine
Engineering controls Hazard substitution Personal protective equipment Job safety analysis Lockout-tagout Permit To Work Operations manual Redundancy
Safeguard_(magazine)
Technology discipline within engineering
where each device is interconnected with several others, offers high redundancy and reliability but requires a more complex design and larger hardware
Computer_network_engineering
Non-functional requirements for system evaluation
predictability process capabilities producibility provability recoverability redundancy relevance reliability repairability repeatability reproducibility resilience
List of system quality attributes
List_of_system_quality_attributes
Compact encoding of digital data
Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces
Data_compression
Extracting features from raw data for machine learning
relational databases, which results in many redundant operations. These redundancies can be reduced by using techniques such as tuple id propagation. There
Feature_engineering
Artificial intelligence field of study
Researchers in safety-critical AI have proposed using architectural redundancy and design diversity to reduce the risk that a single faulty, compromised
AI_safety
Joining of several channels of similar information to allow more efficient encoding
may be used to mix the spherical harmonic channels together, reducing redundancy. Parametric stereo is similar to intensity stereo, except that parameters
Joint_encoding
Electrical device that uses batteries to prevent any interruption of power flow
2016-03-03. Detailed explanation of UPS redundancy options"High-Availability Power Systems, Part II: Redundancy Options" (PDF). Archived from the original
Uninterruptible_power_supply
Random text generating software
Rooter: A Methodology for the Typical Unification of Access Points and Redundancy: Many physicists would agree that, had it not been for congestion control
SCIgen
Richmond Precision Engineering Ltd v Pearce [1985] IRLR 179 is a UK labour law case, concerning redundancy. Mr Pearce was offered a new contract with
Richmond Precision Engineering Ltd v Pearce
Richmond_Precision_Engineering_Ltd_v_Pearce
Resilience of systems to component failures or errors
1950s. Two kinds of redundancy are possible: space redundancy and time redundancy. Space redundancy provides additional components, functions, or data
Fault_tolerance
High-redundancy actuation (HRA) is a new approach to fault-tolerant control in the area of mechanical actuation. The basic idea is to use a lot of small
High-redundancy_actuation
Type of air data system
can potentially reduce risk by creating an extra layer of redundancy (analytical redundancy) to the mechanical air data system such as the pitot-static
Synthetic_air_data_system
Simultaneous observation and analysis of more than one outcome variable
is the generalised (i.e. canonical) version of bivariate correlation. Redundancy analysis (RDA) is similar to canonical correlation analysis but allows
Multivariate_statistics
Branch of engineering
data for intercept targeting. Complex systems typically have multiple redundancy to address drift, improve accuracy (ex. relative to a target) and address
Guidance, navigation, and control
Guidance,_navigation,_and_control
Mathematical statistics distance measure
entropy), but the relative entropy continues to be just as relevant. In the engineering literature, MDI is sometimes called the Principle of Minimum Cross-Entropy
Kullback–Leibler_divergence
Means of compressing an executable file
languages are designed to work on human-readable code, which has a high redundancy, compression can be very effective and as simple as replacing long names
Executable_compression
Type of bridge
not only adds strength but improves reliability (often called redundancy in engineering terms) because the failure of a few flawed strands in the hundreds
Suspension_bridge
Maintaining a device in working condition
that incorporate active redundancy and fault reporting. It is also applicable to non-mission-critical systems that lack redundancy and fault reporting. Condition-based
Maintenance
from the nominal sample rate values (e.g., 158.8 kHz - 208 kHz). Network redundancy is provided by 802.1 Ethernet: STP, Link aggregation; redundant network
Comparison of audio network protocols
Comparison_of_audio_network_protocols
Process design in chemical engineering
maintenance costs. Other factors that designers may include are: Reliability Redundancy Flexibility Anticipated variability in feed stock and allowable variability
Process_design
1877 steam hammer in Le Creusot, France
the world. The Creusot steam hammer was named a Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers in 1981. In
Creusot_steam_hammer
British bridge works and structural steel contractor
further funding from Al Rushaid Group and warned 220 staff of potential redundancies. That same month, the firm was reported to be on the brink of administration
Cleveland Bridge & Engineering Company
Cleveland_Bridge_&_Engineering_Company
Risk management of underwater diving activities
control – Process in which identified risks are reduced or mitigated Engineering redundancy: The duplication of critical components or functions of a system
Diving_safety
1984 book by Charles Perrow
The technology may be proven, but people are not". Sometimes, engineering redundancies which are put in place to help ensure safety may backfire and produce
Normal_Accidents
Collection of loosely coupled services used to build computer applications
in certain large-scale distributed systems where fault isolation and redundancy are design priorities. Its implementation varies based on system requirements
Microservices
Alphabetical listing of underwater diving related topics
or less Reduced gradient bubble model – Decompression algorithm Redundancy (engineering) – Duplication of critical components to increase reliability of
Index of underwater diving: O–R
Index_of_underwater_diving:_O–R
Electronic flight control system
wire system. This system also included solid-state components and system redundancy, was designed to be integrated with a computerised navigation and automatic
Fly-by-wire
Vacuum pump manufacturer
Archived from the original on 24 November 2020. Retrieved 21 July 2022. "Redundancy hits factory workers". BBC News. 13 January 2010. Archived from the original
Edwards_Vacuum
American automobile components manufacturer
and others, that a contractual term entitling employees to an enhanced redundancy payment could be implied into the employees' contracts of employment based
Dauch_Corporation
Electrical network switch which can use field-replaceable units
parallel or failover configuration, which can allow for higher bandwidth, or redundancy in the event of failure. Modular switches also typically support hot-swap
Modular_switch
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
Girl/Female
Hindu
God of Raghavendra
Boy/Male
Indian
The rich, The independent
Girl/Female
Latin
From Arcanania.
Girl/Female
Muslim
Mehndi, Fragrance
Girl/Female
Arabic, Christian, English, Hebrew, Hindu, Indian, Marathi, Parsi, Swedish
Decoration; Friday; Beautiful; Gorgeous; Delicate; Slender; Refined; Gentle
Girl/Female
Finnish, French, German, Greek, Swedish
Mercy; God is My Light; Bright; Shining; Torch
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Sikh
Good Deeds
Female
Hebrew
Variant spelling of Hebrew Deganya, DEGANIAH means "grain."
Boy/Male
American, Chinese, French, German, Greek, Spanish
Crowned; Variant of Stephen
Boy/Male
Hindu, Indian, Punjabi, Sikh
The Power of Lord Ganesha
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
REDUNDANCY ENGINEERING
n.
That which is redundant or in excess; anything superfluous or superabundant.
a.
Brought to consummation or completeness; completed; not defective nor redundant; having all the properties or qualities requisite to its nature and kind; without flaw, fault, or blemish; without error; mature; whole; pure; sound; right; correct.
n.
Alt. of Redundancy
n.
Structures in civil, military, or naval engineering, as docks, bridges, embankments, trenches, fortifications, and the like; also, the structures and grounds of a manufacturing establishment; as, iron works; locomotive works; gas works.
a.
Of or pertaining to pleonasm; of the nature of pleonasm; redundant.
a.
Redundant or excessive in words.
n.
The act of filling or crowding together; a stopping by redundant matter; obstruction, particularly in the lower intestines.
n.
The quality or state of being redundant; superfluity; superabundance; excess.
n.
Redundancy of language in speaking or writing; the use of more words than are necessary to express the idea; as, I saw it with my own eyes.
a.
Using more worrds or images than are necessary or useful; pleonastic.
v. i.
To be in excess; to remain over and above; to be redundant; to overflow.
n.
The quality or state of being superabundant; a superabundant quantity; redundancy; excess.
n.
any preparation used to render an organism immune to some disease, by inducing or increasing the natural immunity mechanisms. Prior to 1995, such preparations usually contained killed organisms of the type for which immunity was desired, and sometimes used live organisms having attenuated virulence. since that date, preparations containing only specific antigenic portions of the pathogenic organism are also used, some of which are prepared by genetic engineering techniques.
a.
Abounding to excess; being more than is sufficient; redundant; as, superabundant zeal.
n.
The quality of being incorrect; want of conformity to truth or to a standard; inaccuracy; inexactness; as incorrectness may in defect or in redundance.
adv.
In a refundant manner.
n.
A verse which has a redundant syllable or foot; a hypercatalectic verse.
a.
Exceeding what is natural or necessary; superabundant; exuberant; as, a redundant quantity of bile or food.
a.
Having a redundant syllable; exceeding the common measure.
n.
Surplusage inserted in a pleading which may be rejected by the court without impairing the validity of what remains.