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Surplus computer data for error correction
buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data. The
Data_redundancy
Sharing information to ensure consistency in computing
Replication in computing refers to maintain multiple copies of data, processes, or resources to ensure consistency across redundant components. This fundamental
Replication_(computing)
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
Centralized storage of knowledge
operational data store, the information from which is parsed into the actual data warehouse. To reduce data redundancy, larger systems often store the data in
Data_warehouse
Reduction of data redundancy
database in accordance with a series of normal forms to reduce data redundancy and improve data integrity. It was first proposed by British computer scientist
Database_normalization
Error-detecting code for detecting data changes
redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital data.
Cyclic_redundancy_check
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)
Message encoded with more bits than needed
certain data. Data compression is a way to reduce or eliminate unwanted redundancy, while forward error correction is a way of adding desired redundancy for
Redundancy (information theory)
Redundancy_(information_theory)
Topics referred to by the same term
expressed more than once Data redundancy, database systems which have a field that is repeated in two or more tables Logic redundancy, a digital gate network
Redundancy
Storage of digital data readable by computers
of electronic components on flash storage. Redundancy allows the computer to detect errors in coded data (for example, a random bit flip due to random
Computer_data_storage
Recording of information in a storage medium
Data storage is the recording (storing) of information (data) in a storage medium. Handwriting, phonographic recording, magnetic tape, and optical discs
Data_storage
Error detection number calculated over a serial data stream
telecommunication, a longitudinal redundancy check (LRC), or horizontal redundancy check, is a form of redundancy check that is applied independently
Longitudinal_redundancy_check
Decentralized networked online storage
network like the Internet, the source node will add some level of redundancy to each data block. This allows the system to recreate the entire block even
Cooperative_storage_cloud
Data storage device
for long-term archiving of data. The ability to retain data is affected by the controller's firmware, internal data redundancy, and error correction algorithms
USB_flash_drive
Computer memory type used for data preservation
5D optical data storage is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. It is
5D_optical_data_storage
Repository within Usenet
network the ability to maintain a level of robust data persistence as a result of built-in data redundancy. However, most users will access using only the
Usenet_newsgroup
Practice for controlling corporate data
product) will be included in different product lines. This leads to data redundancy and even confusion. For example, a customer takes out a mortgage at
Master_data_management
Abstract model
Data Communication Network Systems: Techniques and Applications. Page 7 "Derivability, Redundancy, and Consistency of Relations Stored in Large Data Banks"
Data_model
Data storage technologies that use magnetic tape
Magnetic-tape data storage is a system for storing digital information on magnetic tape using digital recording. Commercial magnetic tape products used for data storage
Magnetic-tape_data_storage
Resilience of systems to component failures or errors
redundancy are possible: space redundancy and time redundancy. Space redundancy provides additional components, functions, or data items that are unnecessary
Fault_tolerance
Electronic non-volatile computer storage device
varies among flash storage devices due to differences in firmware, data redundancy, and error correction algorithms. An article from CMU in 2015 states
Flash_memory
Source available in-memory key–value database
Replication is useful for read (but not write) scalability or data redundancy. When the durability of data is not needed, the in-memory nature of Redis allows it
Redis
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
Compact encoding of digital data
compress and decompress the data. Lossless data compression algorithms usually exploit statistical redundancy to represent data without losing any information
Data_compression
Type of computer memory
Double data rate synchronous dynamic random-access memory (DDR SDRAM) is a type of synchronous dynamic random-access memory (SDRAM) widely used in computers
DDR_SDRAM
Type of computer memory
area of research. The first DRAM integrated circuits did not have any redundancy. An integrated circuit with a defective DRAM cell would be discarded.
Dynamic_random-access_memory
Two nucleobases bound by hydrogen bonds
information encoded within each strand of DNA. The regular structure and data redundancy provided by the DNA double helix make DNA well suited to the storage
Base_pair
Group of spatially dispersed and dedicated sensors
values. This kind of data redundancy due to the spatial correlation between sensor observations inspires techniques for in-network data aggregation and mining
Wireless_sensor_network
State of qualitative or quantitative pieces of information
ensuring computer data is both correct and useful Database normalization – Reduction of data redundancy ISO 8000 international standard for data quality Information
Data_quality
Facility used to house computer servers
outside world, which are connected according to the data center network architecture. Redundancy of the internet connection is often provided by using
Data_center
Systems with high up-time, a.k.a. "always on"
99.9023% availability. Two kinds of redundancy are passive redundancy and active redundancy. Passive redundancy is used to achieve high availability
High_availability
Techniques for using multiple disk drives that do not use RAID
providing data redundancy through software – a shared folder can be marked for duplication, which signals to the OS that a copy of the data should be
Non-RAID_drive_architectures
Errors in computer data that introduce unintended changes to the original data
that provide data redundancy, such file systems can also reconstruct corrupted data in a transparent way. This approach allows improved data integrity protection
Data_corruption
Process of encoding and decoding binary data to and from synthesized strands of DNA
researcher, eleven JPEG images and one JavaScript program. Multiple copies for redundancy were added and 5.5 petabits can be stored in each cubic millimeter of
DNA_digital_data_storage
Data compression approach allowing perfect reconstruction of the original data
real-world data exhibits statistical redundancy. By contrast, lossy compression permits reconstruction only of an approximation of the original data, though
Lossless_compression
Any of a set of standard configurations of Redundant Arrays of Independent Disks
or striped volume) splits ("stripes") data evenly across two or more disks, without parity information, redundancy, or fault tolerance. Since RAID 0 provides
Standard_RAID_levels
Copy-on-write file system
stored on them. ZFS is designed to ensure (subject to sufficient data redundancy) that data stored on disks cannot be lost due to physical errors, misprocessing
ZFS
Data storage technology
single, high-capacity drive if one built redundancy into the computer storage system by configuring it to write data to more than one disk automatically.
RAID
Type of computer memory
Low-Power Double Data Rate (LPDDR) is a type of synchronous dynamic random-access memory (SDRAM) designed to use less power than conventional memory. It
LPDDR
Form of non-volatile memory used in computers and other electronic devices
form of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified after the manufacture of
Read-only_memory
In software engineering, experimenting with the product to test extreme situations
Storm simulates datacenter failures for natural disaster resistance. Data redundancy Error detection and correction Fail-fast system Fail fast (business)
Chaos_engineering
Technology to correct measurements in industrial processes
constraints. Here, redundancy is defined differently from redundancy in information theory. Instead, redundancy arises from combining sensor data with the model
Data validation and reconciliation
Data_validation_and_reconciliation
Disk drive protocol
data redundancy for critical applications. SSA was deployed in server RAID environments, where it was capable of providing for up to 80 MB/s of data throughput
Serial_Storage_Architecture
Code sequence with no branches except at entry and exit
Javad (2015). "Masking wrong-successor Control Flow Errors employing data redundancy". 2015 5th International Conference on Computer and Knowledge Engineering
Basic_block
Indian secure cloud based Digital Document Wallet
Encryption Mobile Authentication based Sign Up ISO 27001 certified Data Centre Data Redundancy Timed Log Out Security Audit India Stack Aadhaar Direct Benefit
DigiLocker
Database operated in a single location
below: Data integrity is maximized and data redundancy is minimized, as the single storing place of all the data also implies that a given set of data only
Centralized_database
Representation of an organization's data
business data elements and requirement Provides foundation for designing a database Facilitates avoidance of data redundancy and thus prevent data and business
Logical_schema
Discrete, discontinuous representation of information
as check codes may be used to detect errors and correct them through redundancy or re-transmission. Errors in digital communications can take the form
Digital_data
Type of memory used on processors that require high transfer rate memory
CK_t and CK_c. Each channel interface maintained a 128‑bit data bus operating at this double data rate (DDR). HBM1 supported transfer rates of 1 GT/s per
High_Bandwidth_Memory
Machine learning paradigm
advantage of decision trees is that they easily handle heterogeneous data. Redundancy in the data. If the input features contain redundant information (e.g., highly
Supervised_learning
Including one data set inside another automatically
chapters. An advantage of this system in textbooks is that it helps data redundancy and keeps the book to a manageable size. Transclusion works better
Transclusion
Determination of the geographic position of an object
than three reference points to compute a position fix to increase the data redundancy. As more redundant reference points are added, the position fix becomes
Geopositioning
Type of data transmission method
of a few records in a large table – delta encoding greatly reduces data redundancy. Collections of unique deltas are substantially more space-efficient
Delta_encoding
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
Data recording made of plastic film
important to enable transferring data. Tape data storage is now used more for system backup, data archive and data exchange. The low cost of tape has
Magnetic_tape
File archiver
key derivation function based on PBKDF2 using HMAC-SHA256 Optional data redundancy is provided in the form of Reed–Solomon recovery records and recovery
WinRAR
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
Computer network protocol
media redundancy concept. In the MRPD, the cyclic real-time data is transmitted in both directions in the ring-shaped topology. A time stamp in the data packet
Profinet
Form of computer data storage
any order, typically used to store working data and machine code. A random-access memory device allows data items to be read or written in almost the same
Random-access_memory
Computer network with multiple nodes to store information
A distributed data store is a computer network where information is stored on more than one node, often in a replicated fashion. It is usually specifically
Distributed_data_store
Mapping of a known quantity to an unknown entity
organizing the fields and tables of a relational database to minimize redundancy and dependency, is the central, defining function of the discipline.[page needed]
Identification_(information)
Distributed data processing framework
the data is, and, failing that, on the same rack/switch to reduce backbone traffic. HDFS uses this method when replicating data for data redundancy across
Apache_Hadoop
Magnetic tape data storage technology
the LTO Ultrium format, is a magnetic tape data storage technology used for backup, data archiving, and data transfer. It was originally developed in the
Linear_Tape-Open
Two-dimensional matrix barcode
even in the case of ECC 000, each of these versions also encode a cyclic redundancy check (CRC) on the bit pattern. As an added measure, the placement of
Data_Matrix
Information repository with multiple applications
clear and unambiguous. A database had the following properties: Flat data: Data was usually represented in a tabular format with strings or numbers in
Knowledge_base
Signal used to represent data as a sequence of discrete values
filtering off interfering signals as much as possible and by using data redundancy. The main advantages of digital signals for communications are often
Digital_signal
Unit of data on an Ethernet network
cyclic redundancy check used to detect any in-transit corruption of data. A data packet on the wire and the frame as its payload consist of binary data. Ethernet
Ethernet_frame
Form of resilience with independent backup components
path becomes unavailable. Data centre power generators that activate when the normal power source is unavailable. 1+1 redundancy typically offers the advantage
N+1_redundancy
Information that is expressed more than once
redundancy in Wiktionary, the free dictionary. In linguistics, a redundancy is information that is expressed more than once. Examples of redundancies
Redundancy_(linguistics)
Computer memory that loses its contents when unpowered
contents while powered on but when the power is interrupted, the stored data is quickly lost. Volatile memory has several uses, including as primary storage
Volatile_memory
Early form of read-only memory
Corporation in the 1950s, as it was a popular technology for program and data storage in that era. It was later used in the 1960s by early NASA Mars space
Core_rope_memory
Bit added to a binary string for error detection
creates "redundancy" for a region from the size of one bit to the size of one disk. See § RAID array below. In electronics, transcoding data with parity
Parity_bit
Persistent computer data storage with no moving parts
(in tape drives). Pairing such magnetic media with read/write heads allows data to be written by separately magnetizing small sections of the ferromagnetic
Solid-state_storage
Database management system by SAP
removing the need for maintaining aggregate views and its associated data redundancy. Although row-oriented systems have traditionally been favored for
SAP_HANA
Removable disk storage medium
similar systems. Each sector of data has a header that identifies the sector location on the disk. A cyclic redundancy check (CRC) is written into the
Floppy_disk
Type of computer memory
memory (MRAM) is a type of non-volatile random-access memory which stores data in magnetic domains. Developed in the mid-1980s, proponents have argued that
Magnetoresistive_RAM
Memory card format
higher clock speeds (26 MHz and 52 MHz alongside the normal 20 MHz) and wider data buses (8‑bit alongside the previous 1- and 4‑bit), which combined to enable
MultiMediaCard
Use of paper as computer memory
Paper data storage refers to the use of paper as a data storage device. This includes writing, illustrating, and the use of data that can be interpreted
Paper_data_storage
Computer storage device with no moving parts
type of solid-state storage device that uses integrated circuits to store data persistently. It is sometimes called semiconductor storage device, solid-state
Solid-state_drive
information theory, set redundancy compression are methods of data compression that exploits redundancy between individual data groups of a set, usually
Set_redundancy_compression
Electro-mechanical data storage device
e.g. the operating system using some space, use of some space for data redundancy, space use for file system structures. Confusion of decimal prefixes
Hard_disk_drive
Organized collection of data in computing
their original updated database data, and the cost of storage redundancy. Occasionally a database employs storage redundancy by database objects replication
Database
Computer memory used for small quantities of data
systems, or as a separate chip device, to store relatively small amounts of data by allowing individual bytes to be erased and reprogrammed. EEPROMs are organized
EEPROM
Type of memory used on graphics cards
although they share some of the same features—including double data rate (DDR) data transfers. As of 2025[update], GDDR SDRAM has been succeeded by GDDR2
GDDR_SDRAM
Topics referred to by the same term
compatibility issues with legacy systems Data redundancy, either wanted or unwanted (in which case one resorts to data deduplication) Content copying through
Duplication
Principle of software development
abstractions that are less likely to change, or using data normalization which avoids redundancy in the first place. The DRY principle is stated as "Every
Don't_repeat_yourself
Level of database normalization
enable the reduction of redundancy and anomalies. Other benefits of adopting 1NF include the introduction of increased data independence and flexibility
First_normal_form
retrieval data structure that uses r v + k {\displaystyle rv+k} bits is said to have redundancy k {\displaystyle k} . An ideal retrieval data structure
Retrieval_Data_Structure
Combining data from multiple sources
Data integration is the process of combining, sharing, or synchronizing data from multiple sources to provide users with a unified view. There are a wide
Data_integration
American open source software company
specific hardware support. Ceph's system offers disaster recovery and data redundancy through techniques such as replication, erasure coding, snapshots and
Red_Hat
Computer memory that does not lose its contents after being turned off
constant power in order to retain data. Non-volatile memory typically refers to storage in memory chips, which store data in floating-gate memory cells consisting
Non-volatile_memory
Software framework of Linux kernel
block device mirror – maps a mirrored logical device, while providing data redundancy multipath – supports the mapping of multipathed devices, through usage
Device_mapper
Real-world applications of data mining
values. This kind of data redundancy due to the spatial correlation between sensor observations inspires the techniques for in-network data aggregation and
Examples_of_data_mining
Method to store and retrieve computer data using optics
Optical storage is a class of data storage systems that use light to read or write data to an underlying optical media. Although a number of optical formats
Optical_storage
Hardware cache of a central processing unit
use the whole cache, reducing data redundancy by making it possible for different processes or threads to share cached data, and reducing the complexity
CPU_cache
Malicious software used in ransom demands
dependability Air gap (networking) – Network security measure Data redundancy – Surplus computer data for error correction Fault tolerance – Resilience of systems
Ransomware
Electromechanical malfunctioning
after a failure Data scrubbing, to detect and repair latent corruption Data redundancy, to allow systems to tolerate failures of individual drives Active
Hard_disk_drive_failure
Type of computer memory
memory; data is lost when power is removed. The static qualifier differentiates SRAM from dynamic random-access memory (DRAM): SRAM will hold its data permanently
Static_random-access_memory
Alternatively, RAID N+M refers to N regular data drives with M redundancy drives, being able to recover all the data when any M drives fail. It is possible
Non-standard_RAID_levels
Obsolete form of removable media
computer data storage, introduced in the 1960s. A disk pack is a layered grouping of hard disk platters (circular, rigid discs coated with a magnetic data storage
Disk_pack
DATA REDUNDANCY
DATA REDUNDANCY
Female
Hebrew
(×“Ö¼Ö¸× Ö¸×”) Feminine form of Hebrew Dan, DANA means "judge." Compare with other forms of Dana.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
Female
Finnish
 Short form of Finnish Katariina, KATA means "pure." Compare with other forms of Kata.
Male
Turkish
Turkish name ATA means "ancestor."
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Female
Hungarian
 Short form of Hungarian Katalin, KATA means "pure." Compare with other forms of Kata.
Female
Slavic
 Short form of Slavic Bogdana, DANA means "gift from God." Compare with other forms of Dana.
Female
English
 Middle English name DARA means "brave, daring." Compare with another form of Dara.
Male
Hebrew
Variant spelling of Hebrew Dathan, DATAN means "belonging to a fountain."
Female
Hindi/Indian
(लता) Hindi name derived from a plant name, from the Sanskrit word lata, LATA means "creeper," in reference to a creeping plant.
Male
Irish
Irish Gaelic name MAC DARA means "son of oak." This is the name of a patron saint and is still common in Ireland, especially in Connemara.
Male
English
English surname transferred to unisex forename use, possibly DANA means "from Denmark."
Male
Hebrew
(דֶּרַע) Hebrew name DARA means "the arm." In the bible, this is the name of a son of Zerah. Compare with other forms of Dara.
Female
Hebrew
(דִּיתָה) Pet form of Hebrew Yehuwdiyth, DITA means "Jewess" or "praised." Compare with another form of Dita.
Female
English
 English surname transferred to unisex forename use, possibly DANA means "from Denmark." Compare with other forms of Dana.
Female
Polish
Short form of Polish Edyta, DYTA means "rich battle."
Female
Russian
 Short form of Russian Yekaterina, KATA means "pure." Compare with other forms of Kata.
Girl/Female
Hindu
A creeper
Female
Finnish
Variant form of Finnish Aada, AATA means "noble."
Female
Polish
 Variant spelling of Polish Dyta, DITA means "rich battle." Compare with another form of Dita.
DATA REDUNDANCY
DATA REDUNDANCY
Boy/Male
Hindu, Indian
Heaven
Boy/Male
Arabic, Muslim
Brightness of the Faith
Boy/Male
Hindu
Praised
Boy/Male
Hindu, Indian, Kannada, Sanskrit, Tamil
Black Stone
Boy/Male
Indian
Bear
Girl/Female
Arabic, Australian, Greek
Leader
Girl/Female
Welsh
My fine, rare one.
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Oriya, Punjabi, Sikh, Tamil, Traditional
Krishna's Brother
Girl/Female
Hindu
Boy/Male
Egyptian
Mythical earth god.
DATA REDUNDANCY
DATA REDUNDANCY
DATA REDUNDANCY
DATA REDUNDANCY
DATA REDUNDANCY
v. i.
To have beginning; to begin; to be dated or reckoned; -- with from.
pl.
of Datum
n. pl.
See Datum.
a.
Being out of date; antiquated.
n.
The fruit of the date palm; also, the date palm itself.
v. t.
To date erroneously.
imp. & p. p.
of Date
n.
Given or assigned length of life; dyration.
p. pr. & vb. n.
of Date
a.
Without date; having no fixed time.
v. t.
To note or fix the time of, as of an event; to give the date of; as, to date the building of the pyramids.
n.
That addition to a writing, inscription, coin, etc., which specifies the time (as day, month, and year) when the writing or inscription was given, or executed, or made; as, the date of a letter, of a will, of a deed, of a coin. etc.
n.
A New Zealand forest tree (Metrosideros robusta), also, its hard dark red wood, used by the Maoris for paddles and war clubs.
n.
The point of time at which a transaction or event takes place, or is appointed to take place; a given point of time; epoch; as, the date of a battle.
v. t.
To note the time of writing or executing; to express in an instrument the time of its execution; as, to date a letter, a bond, a deed, or a charter.
n.
Prior date; a date antecedent to another which is the actual date.
n.
Assigned end; conclusion.
n.
Death; decease; the date of one's death.
a.
Erroneous in date; containing an anachronism.