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Code added to allow recovery of lost data
In coding theory, an erasure code is a forward error correction (FEC) code under the assumption of bit erasures (rather than bit errors), which transforms a message of k symbols into a longer message (code word) with n symbols such that the original message can be recovered from a subset of the n symbols. The fraction r = k/n is called the code rate. The fraction k’/k, where k’ denotes the number of symbols required for recovery, is called reception efficiency. The recovery algorithm expects that it is known which of the n symbols are lost — unlike forward error correction codes.
In coding theory, an erasurecode is a forward error correction (FEC) code under the assumption of bit erasures (rather than bit errors), which transforms...
In coding theory, fountain codes (also known as rateless erasurecodes) are a class of erasurecodes with the property that a potentially limitless sequence...
data Erasure channel, a communication channel model wherein errors are described as erasuresErasurecode, a forward error correction (FEC) code for the...
In coding theory, Tornado codes are a class of erasurecodes that support error correction. Tornado codes require a constant C more redundant blocks than...
In computer science, online codes are an example of rateless erasurecodes. These codes can encode a message into a number of symbols such that knowledge...
Replication in Alluxio". "Caching: Managing Data Replication in Alluxio". "ErasureCode Profiles". "Pools". Satyanarayanan, Mahadev; Kistler, James J.; Kumar...
Nordstrom-Robinson code, used in Geometry and Group Theory Online code, a near-optimal rateless erasure correcting code Polar code (coding theory) Raptor code, a near-optimal...
Raptor codes are formed by the concatenation of two codes. A fixed rate erasurecode, usually with a fairly high rate, is applied as a 'pre-code' or 'outer...
In coding theory and information theory, a binary erasure channel (BEC) is a communications channel model. A transmitter sends a bit (a zero or a one)...
archive, and formally known as Parity Volume Set Specification) is an erasurecode system that produces par files for checksum verification of data integrity...
interface connecting peripheral devices to a computer, usually a laptop Erasurecode, in information theory Electrical conductivity, of a solution EC meter...
of useful information. A few error correction codes do not have a fixed code rate—rateless erasurecodes. Note that bit/s is a more widespread unit of...
latter approach is particularly attractive on an erasure channel when using a rateless erasurecode. Error detection is most commonly realized using a...
RAID-6 Liberation Codes". "Optimal Encoding and Decoding Algorithms for the RAID-6 Liberation Codes". James S. Plank. "ErasureCodes for Storage Systems:...
efficiency for mobile receivers, a systematic Reed-Solomon code is employed as an erasurecode over packets within a data burst, where each packet is protected...
location). This channel model is closely related to the binary erasure channel. An erasurecode can be used for forward error correction on such a channel...
The Code of Hammurabi is a Babylonian legal text composed during 1755–1750 BC. It is the longest, best-organized, and best-preserved legal text from the...
the Erasure/Delete/LS control code was always punched and always shifted to the (initial) letters mode. According to some sources, the Null code point...
Enterprise tape) MVFS – MultiVersion File System, proprietary, used by IBM DevOps Code ClearCase. Nexfs Combines Block, File, Object and Cloud storage into a single...
Data erasure (sometimes referred to as data clearing, data wiping, or data destruction) is a software-based method of data sanitization that aims to completely...
science, Luby transform codes (LT codes) are the first class of practical fountain codes that are near-optimal erasure correcting codes. They were invented...
Erasure poetry, or blackout poetry, is a form of found poetry or found object art created by erasing words from an existing text in prose or verse and...
optimized for large enterprise deployments, including features like erasurecoding, bitrot protection, encryption/WORM, identity management, continuous...
code known for non-erasure channels. Practical adaptive codes for erasure channels have been invented only recently, and are known as fountain codes....
local storage provides other resiliency options including mirroring or erasurecoding with different parity levels. Another advantage is that unlike a typical...
long as they straddle a code word boundary. When decoding, a code word of all zero or all one may be assumed to be an erasure, and corrected more efficiently...
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