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RAID

RAID (Redundant Array of Inexpensive Disks) is an orchestrated approach to computer data storage in which data is written to more than one secondary storage device. Instead of storing all data in a single hard disk drive or solid-state drive, RAID coordinates two or more such devices into a disk array. When the computer writes data to secondary storage…

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Overview

History

Standard levels

Nested (hybrid) RAID

Non-standard levels

Implementations

Integrity

Weaknesses

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Map overview Semantic statistics

RAID

Nodes157
Edges156
Triples201
Avg. degree1.99
Density0.012739
Components1

How this topic connects Entity context

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RAID

Top relations

related to Further reading · 33
RAID → Alina, Anvin, Archived, Ari, BAARF, Battle Against Any RAID-3/4/5, Catharine, Clean-Slate Look, December, Disk Failure Rates, Disk Scrubbing, Empirical Measurements, Error Rates, February, File, Gray, Ingen, James, January, Jim
related to Integrity · 20
RAID → Around September, ATA Error Recovery Control, Caviar Black, Consequently, Data, For, Frequently, Hitachi, However, In, Samsung, Seagate, Similar, Smartmontools, The, This, TLER, WDTLER, Western Digital, Western Digital's
related to Atomicity · 18
RAID → Avoiding, Copy-on-write, COW, Dynamic, Hardware RAID, If, IO, It, NVMs, Partial, RAID-Z, RAIDs, SSDs, The, This, WAL, Write, Write-ahead
related to Non-standard levels · 17
RAID → Because, BeeGFS, Declustered RAID, Hadoop, HDFS, Linux, Linux MD RAID, Lustre, Many, MD RAID, RAID0, RAID10, Regular RAID, Such, The, When, With
related to Unrecoverable read errors during rebuild · 16
RAID → Data, Double-protection, FC, IDE/ATA/PATA, Increasing, LSE, SAS, SATA, Schemes, SCSI, The, UBE, Unrecoverable, URE, UREs, When
related to history · 14
RAID → Although, Berkeley, California, Case, David Patterson, Garth Gibson, In, Inexpensive Disks, June, Randy Katz, Redundant Arrays, SIGMOD Conference, The, University
related to Firmware- and driver-based · 11
RAID → An, Because, Consequently, During, However, If RAID, Intel Rapid Storage Technology, Software-implemented RAID, To, Windows, XOR
related to Hardware-based · 11
RAID → Adaptec, Adaptec RAID, BIOS, Ethernet, For, FreeBSD, Hardware RAID, Linux, Option ROM, Unix, Unlike
related to Increasing rebuild time and failure probability · 11
RAID → Berriman, Drive, Even, Given, However, MTBF, NetApp, Nevertheless, Some, The, Therefore
related to overview · 11
RAID → Adaptec, For, Galois, Most, Reed, Solomon, Some RAID, SSD, SSDs, The, XOR

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Important terminology

data drive array drives parity storage failure disk system disks time software one also striping write levels recovery single used

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
RAIDis aacronym for redundant array of inexpensive disks0.90text
RAID setsinstance ofbut also volumes0.80text
Veritas or LVMinstance ofprovided with most server-class operating systems0.80text
RAID 5 are particularly prone to the effects of UREs as they affect not only the sector where they occurinstance ofparity-based schemes0.80text
but also reconstructed blocks using that sector for parity computation.Double-protection parity-based schemesinstance ofparity-based schemes0.80text
such as RAID 6instance ofparity-based schemes0.80text
attempt to address this issue by providing redundancy that allows double-drive failuresinstance ofparity-based schemes0.80text
RAID 10 have a bounded recovery time as they require the copy of a single failed driveinstance ofMirroring schemes0.80text
compared with parity schemes such as RAID 6instance ofMirroring schemes0.80text
which require the copy of all blocks of the drives in an array setinstance ofMirroring schemes0.80text
RAIDrelated to AtomicityThis0.60section
RAIDrelated to AtomicityRAIDs0.60section

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