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Data processing technique to eliminate duplicate copies of repeating data
In computing, data deduplication is a technique for eliminating duplicate copies of repeating data. Successful implementation of the technique can improve
Data_deduplication
Topics referred to by the same term
Look up deduplication in Wiktionary, the free dictionary. The term deduplication refers generally to eliminating duplicate or redundant information. Data
Deduplication
Kernel feature to share memory pages between multiple processes or virtualised guests
also known as kernel shared memory, memory merging, memory deduplication, and page deduplication is a kernel feature that makes it possible for a hypervisor
Kernel_same-page_merging
Copy-on-write file system
when using deduplication, which can cause performance to plummet, or result in complete memory starvation.[citation needed] Because deduplication occurs at
ZFS
Stored data in computer systems
called deduplication. It can occur on a server before any data moves to backup media, sometimes referred to as source/client side deduplication. This approach
Backup
messages to be broken into conveniently-sized smaller "chunks". In data deduplication, data synchronization and remote data compression, Chunking is a process
Chunking_(computing)
Malicious archive file designed to disrupt the program or system reading it
mitigation, filesystems with transparent compression and/or transparent deduplication tend to suffer less from zip bombs as these operations reduce the space
Zip_bomb
software. Single-instance storage is a simple variant of data deduplication. While data deduplication may work at a segment or sub-block level, single-instance
Single-instance_storage
Digital identifier derived from the data by an algorithm
people for practical purposes. This fingerprint may be used for data deduplication purposes. This is also referred to as file fingerprinting, data fingerprinting
Fingerprint_(computing)
Data deduplication storage system
Dell EMC Data Domain was Dell EMC’s data deduplication storage system. Development began with the founding of Data Domain, and continued since that company’s
Dell_EMC_Data_Domain
Proprietary file system developed by Microsoft
automated error-correction is only supported on mirrored spaces. Data deduplication was missing in early versions of ReFS. It was implemented in v3.2, debuting
ReFS
File system from DragonFly BSD
checksums to deal with data corruption. HAMMER also supports data block deduplication, meaning that identical data blocks will be stored only once on a file
HAMMER_(file_system)
through deduplication (in development) No Box Backup ? No No Bup Yes Yes, chunk deduplication No Yes (Par2) Yes ? Yes, through deduplication Yes No cpio
Comparison_of_backup_software
mirrored systems. As data is stored on the system, technologies such as deduplication and compression may store data at a greater than 1-to-1 data size-to-space
Storage_efficiency
Open-source implementation of ZFS file system
ZFS, the implementation supports features like data compression, data deduplication, copy-on-write clones, snapshots, RAID-Z, and virtual devices that can
OpenZFS
Hardware company
added many features/functions such as zone level deduplication, adaptive deduplication, global deduplication, scale to 2.7PB full backups, 32 appliances in
ExaGrid
Read-only file system for Linux
Linux 5.13. Direct I/O, Direct Access (DAX) support, chunk-based data deduplication for uncompressed files since Linux 5.15. Multiple device support for
EROFS
ZFS, originally developed by Sun Microsystems, with proprietary data deduplication features added by GreenBytes and subsequently made proprietary for a
ZFS+
Backup software
Microsoft Exchange Server, DB2, and Teradata. Quest Software offers data deduplication, and protection for NAS filers (NDMP). NetVault Backup is based on a
NetVault_Backup
Free and open-source backup software
object-storage services. Notable features include: client-side encryption; deduplication of backup data; incremental backup snapshots; repository checking and
Restic
Copy-on-write file system
between snapshots to a binary stream) Incremental backup Out-of-band data deduplication (requires userspace tools) Ability to handle swap files and swap partitions
Btrfs
Copy-on-write file system
S3 storage and back if needed for SSD aggregates, and Cross Volume Deduplication within an aggregate with maximum of 800TiB for each aggregate. WAFL
Write_Anywhere_File_Layout
Open source command line archiver for Windows and Linux
last-modified date has changed since the previous update. It compresses using deduplication and several algorithms (LZ77, BWT, and context mixing) depending on
ZPAQ
American IT company
GreenBytes was an American company providing inline deduplication data storage appliances and cloud-scale IO-Offload systems. Robert Petrocelli founded
GreenBytes
Type of hash function
practice the distribution of split-sizes were wider than Rabin, making deduplication results about 1% poorer for the typical cases and 6% poor for the worst
Rolling_hash
Brand name of computer data storage products
appliances utilize the iTX architecture, which includes features such as deduplication and compression, SSD caching and SSD tiering, automated tiered storage
StorTrends
Type of NTFS file system object
April 2019). "Introduction to Data Deduplication in Windows Server 2012". Microsoft Tech Community. "Data Deduplication interoperability". docs.microsoft
NTFS_reparse_point
Task of finding records in a data set that refer to same entity across different sources
disambiguation/linking", "fuzzy matching", "duplicate detection", "deduplication", "record matching", "(reference) reconciliation", "object identification"
Record_linkage
American technology company
data deduplication technology, providing typical data reduction ratios of 15:1 or 93%. The company offers both target and source-based deduplication as
Quantum_Corporation
Computer science problem
be more than one longest common substring. Applications include data deduplication and plagiarism detection. Unlike the longest common subsequence problem
Longest_common_substring
Machine learning model for speech
language identification and matching with transcripts, fuzzy deduplication, and deduplication with evaluation datasets to avoid data contamination. Speechless
Whisper (speech recognition system)
Whisper_(speech_recognition_system)
Dell storage products. The most notable examples were the DR-family of deduplication appliances, launched in 2012, and integration of dedupe into Dell's
Ocarina_Networks
System for versioning updates of Linux-based operating systems
eos-updater. Flatpak, used to store applications and runtimes and to provide deduplication. Fedora's atomic spins (Silverblue, Kinoite, Budgie Atomic, and Sway
OSTree
Encryption method
the provider having access to the encryption keys. The combination of deduplication and convergent encryption was described in a backup system patent filed
Convergent_encryption
quantification. Finding unique elements in a sequence or list requires data deduplication. Contrast singleton. user Is a person who utilizes a computer or network
Glossary_of_computer_science
of their files. At the heart of the complaint was the policy of data deduplication, where the system checks if a file has been uploaded before by any other
Criticism_of_Dropbox
handling very large files like operating system images. It has block-based deduplication and optional par2-based error correction. Bup development began in 2010
Bup
Storage of digital data readable by computers
Memory leak Memory protection Page address register Stable storage Data deduplication Data proliferation Data storage tag used for capturing research data
Computer_data_storage
Backup and recovery software from Arctera
VMware, and Linux, among others. Backup Exec also provides integrated deduplication, replication, and disaster recovery capabilities and helps to manage
Backup_Exec
Metric that measures the distance between two strings of text
analysis, image analysis, evidence-based machine learning, database data deduplication, data mining, incremental search, data integration, malware detection
String_metric
Identifier system for audiovisual objects
The Entertainment Identifier Registry, or EIDR, is a global unique identifier system for a broad array of audiovisual objects, including motion pictures
EIDR
Computer file with a storage device's contents
only store allocated data to reduce storage space. Compression and deduplication are commonly used to further reduce the size of image files. Disk imaging
Disk_image
American open source software company
Acquires Permabit Assets, Eases Barriers to Cloud Portability with Data Deduplication Technology". Red Hat. July 31, 2017. "Red Hat to Acquire CoreOS, Expanding
Red_Hat
Early form of read-only memory
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Core_rope_memory
Behavior tracking for digital marketing
control and change history (audit trail) to maintain accountability Tag deduplication and asynchronous loading to improve page performance Support for A/B
Tag_management_system
Australian computer scientist and entrepreneur
who has made significant contributions to data compression and data deduplication technologies. He is best known as the inventor of the US patent 5,990
Ross_Williams
Electro-mechanical data storage device
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Hard_disk_drive
Phenomenon associated with solid state storage
compression which includes data deduplication Write amplification goes down and SSD speed goes up when data compression and deduplication eliminates more redundant
Write_amplification
Clustered file system
files ~130,690 (VMFS5) Features Transparent compression No Transparent encryption No Data deduplication No Other Supported operating systems VMware ESX
VMware_VMFS
original on 2011-10-13. Retrieved 2010-07-01. "Dell Acquires Storage Deduplication Vendor Ocarina Networks (2010/07/20)". channelinsider.com. Retrieved
List of Dell ownership activities
List_of_Dell_ownership_activities
Internet hosting service for user files
Since secret key encryption results in unique files, it makes data deduplication impossible and therefore may use more storage space. Convergent encryption
File-hosting_service
Journaling file system for IRIX and Linux
set of planned features: snapshots, copy-on-write (COW) data, data deduplication, reflink copies, online data and metadata scrubbing, highly accurate
XFS
Chinese-American computer scientist
work on Distributed Shared Memory (DSM) and co-founding the storage deduplication company Data Domain Inc. which was acquired by EMC Corporation in 2009
Kai_Li
Wireless internet protocol
multiple gateways to collaboratively listen for the same end-device and deduplication of those received frames occur within the Network Server. Network Server:
LoRaWAN
Peer-to-peer file sharing protocol
download. The v2 format also hashes each file individually, enabling deduplication across torrents. If multiple torrents include identical files, a client
BitTorrent
Term in search engine optimization
engine optimization Canonical link element – Type of hyperlink Data deduplication – Data processing technique to eliminate duplicate copies of repeating
Duplicate_content
Version of Windows Server, released in 2013
Spaces stores most frequently accessed files on fastest physical media Deduplication for VHD: Reduces the storage space for VHD files with largely similar
Windows_Server_2012_R2
Disk storage system
that an array has cache memory and advanced functionality, like RAID, deduplication, encryption and virtualization. Components of a disk array include:
Disk_array
Form of computer memory
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Random-access_memory
American video game company
uses content addressed storage based on hashes to achieve automatic deduplication, integrity validation, and efficient caching. Revisions use Merkle trees
Epic_Games
American multinational technology company
family of networked storage systems and partnered on a new line of data deduplication products as part of its TierDisk family of data storage devices. On
Dell
Compact encoding of digital data
nowadays also an in-loop filtering step. In the prediction stage, various deduplication and difference-coding techniques are applied that help decorrelate data
Data_compression
String metric for measuring edit distance
be evaluated against every possible candidate. In record linkage and deduplication, edit distances can be used as features for comparing names, addresses
Levenshtein_distance
Deduplicating backup program
of the internal workings. It uses a rolling hash to implement data deduplication for all data in single repository. Compression defaults to lz4, encryption
Borg_(backup_software)
Free and open-source Unix-like operating system
improvements, including the addition of a new allocation algorithm, as well as deduplication and block cloning optimizations. This version is compatible with FreeBSD
FreeBSD
Electronic non-volatile computer storage device
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Flash_memory
Recording of information in a storage medium
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Data_storage
Computer memory used for small quantities of data
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
EEPROM
American software company
partnership to provide virtual tape library solutions[buzzword] with deduplication for mainframes. Channel Gateway (CGX) is mainframe virtual tape controller
Luminex_Software
National identity card of Pakistan
scans and fingerprints. In 2007 NADRA began implementing fingerprint deduplication for national ID card issuance. By 2008, the data architecture was enhanced
CNIC_(Pakistan)
Application for storing and managing passwords
password-health metrics, site-icon requests, compressed vault size, or attachment deduplication. Across the ten password managers studied, different attack variants
Password_manager
identifying inaccuracy of data, overall quality of existing data, deduplication, and column segmentation. Such data problems can also be identified
Data_analysis
appliance. Albireo SDK – a software development kit designed to add data deduplication to hardware devices or software applications that benefit from sharing
Permabit
Free and open source file archiver
bit Windows and Linux platforms. New features include: Full-archive deduplication similar to ZPAQ Support for the Zstandard compression algorithm Lua
FreeArc
data. Primary technologies used for capacity optimization are data deduplication and data compression. These are delivered as software or hardware, integrated
Capacity_optimization
Techniques for improving data transfer over wide area networks
center around deduplication and TCP acceleration; however, these must occur in the context of multi-gigabit data transfer rates. Deduplication Eliminates
WAN_optimization
Type of computer memory
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Dynamic_random-access_memory
Form of non-volatile memory used in computers and other electronic devices
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Read-only_memory
Journaling file system for Linux
POSIX ACLs Transparent compression No Transparent encryption Yes Data deduplication No Copy-on-write No Other Supported operating systems Linux FreeBSD
Ext4
System or list for multiple mail recipients
legitimate list holders provide their customers with listwashing and data deduplication service regularly for no charge or a small fee.[citation needed] CAN-SPAM
Mailing_list
Proprietary file system developed by Microsoft
2011-06-26. Rick Vanover (14 September 2011). "Windows Server 8 data deduplication". Archived from the original on 2016-07-18. Retrieved 2011-12-02. Indge
NTFS
Graphical disk usage analyzer for Microsoft Windows
include file deletion and movement, NTFS compression, hardlink-based deduplication, and user-defined commands. A separate recovery tool searches local
WinDirStat
Problem in network theory
users. In the curation of citation databases, it can be used for record deduplication. In bioinformatics, it has been used to predict protein-protein interactions
Link_prediction
Repeated fragment of computer source code
problem that may be commonly used but is generally a bad choice Data deduplication – Data processing technique to eliminate duplicate copies of repeating
Duplicate_code
Flat, usually circular disc that encodes binary data
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Optical_disc
Computer memory type used for data preservation
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
5D_optical_data_storage
Linux software utility
Free and open-source software portal Internet portal BitTorrent Data deduplication Flatpak InterPlanetary File System SquashFS zsync "systemd/casync".
Casync
and Tata Consultancy Services were selected to provide a biometric deduplication system for Aadhaar using fingerprint, facial and iris recognition. In
Neurotechnology_(company)
Crowdsourcing of mobile phone sensor data
called deduplication, which involves removing redundant information from a data set to lower costs and improve user experience. The deduplication process
Crowdsensing
Cryptographer
Key-dependent message security Message-locked encryption and secure deduplication Ratcheted encryption Identity-based encryption Non-malleable encryption
Mihir_Bellare
File archiver
modification, creation, last access times with high precision Optional file deduplication Advanced backup options, time-stamped files and previous file version
WinRAR
Cohesive synthesis of information
Examples of technologies available to integrate information include deduplication and string metrics, which allow the detection of similar text in different
Information_integration
Integrated circuit that interfaces flash memory to a host like a PC
out and maximize the endurance of a flash based storage media. The deduplication function to eliminate redundant data and duplicate writes is also added
Flash_memory_controller
Computer memory that does not lose its contents after being turned off
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Non-volatile_memory
Novel computer memory type
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Phase-change_memory
Open-source distributed vector database
the following large scale operations, applicable for vectors: Data deduplication Clustering Anomaly detection Milvus can be deployed as an embedded database
Milvus_(vector_database)
2021 video game
GB, as compared to Hitman 2's 150 GB size. Engine improvements, data deduplication and lossless LZ4 compression were the main contributors to the file
Hitman_3
Removable disk storage medium
Distributed database Database Data bank Data storage Data store Data deduplication Data structure Data redundancy Replication (computing) Memory refresh
Floppy_disk
List of versions of the Java programming language
fixes Java SE 8 Update 20 2014-08-19 669 bug fixes, JMC 5.4, String deduplication (disabled by default) Java SE 8 Update 25 2014-10-14 10 bug fixes Java
Java_version_history
Linux distribution for backup of virtual machines, containers, and physical hosts
Proxmox Backup Server is written mostly in Rust and implements data deduplication to reduce the storage space needed. Data is split into chunks. Development
Proxmox_Backup_Server
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