RAID
data storage virtualization technology
RAID (Redundant Array of Independent 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, the RAID system distributes the data across the array. There are several possible ways of doing this, and those various configurations are called RAID levels.
RAID levels are distinguished by the amount of redundancy they afford and the minimum number of drives they require, as well as by their relative complexity, performance, energy efficiency, fault tolerance, and availability. The definitive techniques used by RAID were conceived in the 1970s and 1980s: data striping to improve read/write efficiency, and disk mirroring or parity drives for data recovery. With the exception of RAID 1, all of the standard RAID levels use storage virtualization to abstract multiple storage devices into one logical storage volume.
In its original coinage, RAID is an acronym for redundant array of inexpensive disks. The RAID Advisory Board (est. 1992) later redefined the acronym to mean redundant array of independent disks.
The public source identifies “RAID” as data storage virtualization technology. This brief keeps that definition visible, then builds a research path around RAID, data and storage.
Why this record matters
A short description can identify a subject without explaining its stakes. For “RAID”, the useful work is to connect “data storage virtualization technology” to the records capable of establishing context and consequence.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q179299. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1992.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “RAID”, its source revision and the description used here.
- Expand the search: follow RAID primary sources, RAID archive and RAID research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “RAID”?
- Has classification or technical consensus changed since the cited source?
- Which observation, specimen, dataset or publication supports the account?
Search terms from this dossier
This entry incorporates text from “RAID” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.