Redundant Arrays of Independent Disks - définition. Qu'est-ce que Redundant Arrays of Independent Disks
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Qu'est-ce (qui) est Redundant Arrays of Independent Disks - définition

DATA STORAGE VIRTUALIZATION TECHNOLOGY
Redundant array of inexpensive disks; Redundant Array of Inexpensive Disks; Redundant Arrays of Independent Disks; Redundant Arrays of Inexpensive Disks; RAID array; Raid array; Redundant Array of Independent Disks; Advanced Data Guarding; Redundant array of independent disks; GVinum; Fakeraid; FakeRAID; Fake-RAID; Fake-raid; Disc duplex; Disk duplexing; Disk duplex; Mirror RAID; Mirroring RAID; RAID mirror; RAID mirroring; RAID Array; RAID storage; Hybrid RAID; Hardware RAID compared to Software RAID; Software RAID; Redundant array of independant disks; R.A.I.D.; RAID 5 write hole; Fake RAID; RAID write hole; RAID stripe alignment; RAID-F; Unrecoverable read error; Unrecoverable Read Error; Unrecoverable read errors; Unrecoverable Read Errors; Unrecoverable bit error; Unrecoverable Bit Error; Unrecoverable bit errors; Unrecoverable Bit Errors; Latent sector error; Latent Sector Error; Latent sector errors; Punctured Stripe in RAID Arrays
  • Storage servers with 24 hard disk drives each and built-in hardware RAID controllers supporting various RAID levels
  • A [[SATA 3.0]] controller that provides RAID functionality through proprietary firmware and drivers

Redundant Arrays of Independent Disks         
<storage, architecture> (RAID. Originally "Redundant Arrays of Inexpensive Disks") A project at the computer science department of the University of California at Berkeley, under the direction of Professor Katz, in conjunction with Professor John Ousterhout and Professor David Patterson. The project is reaching its culmination with the implementation of a prototype disk array file server with a capacity of 40 GBytes and a sustained bandwidth of 80 MBytes/second. The server is being interfaced to a 1 Gb/s local area network. A new initiative, which is part of the Sequoia 2000 Project, seeks to construct a geographically distributed storage system spanning disk arrays and automated libraries of optical disks and tapes. The project will extend the interleaved storage techniques so successfully applied to disks to tertiary storage devices. A key element of the research will be to develop techniques for managing latency in the I/O and network paths. The original ("..Inexpensive..") term referred to the 3.5 and 5.25 inch disks used for the first RAID system but no longer applies. The following standard RAID specifications exist: RAID 0 Non-redundant striped array RAID 1 Mirrored arrays RAID 2 Parallel array with ECC RAID 3 Parallel array with parity RAID 4 Striped array with parity RAID 5 Striped array with rotating parity ftp://wuarchive.wustl.edu/doc/techreports/berkeley.edu/raid/raidPapers. http://HTTP.CS.Berkeley.EDU/projects/parallel/research_summaries/14-Computer-Architecture/. ["A Case for Redundant Arrays of Inexpensive Disks (RAID)", "D. A. Patterson and G. Gibson and R. H. Katz", Proc ACM SIGMOD Conf, Chicago, IL, Jun 1988]. ["Introduction to Redundant Arrays of Inexpensive Disks (RAID)", "D. A. Patterson and P. Chen and G. Gibson and R. H. Katz", IEEE COMPCON 89, San Francisco, Feb-Mar 1989]. (1995-07-20)
Redundant Arrays of Inexpensive Disks         
disk duplexing         
<hardware, storage> A variation on disk mirroring where, as well as redundant disk drives, a second disk controller or host adapter is also present. (1996-02-22)

Wikipédia

RAID

RAID (; "redundant array of inexpensive disks" or "redundant array of independent disks") is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both. This is in contrast to the previous concept of highly reliable mainframe disk drives referred to as "single large expensive disk" (SLED).

Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the required level of redundancy and performance. The different schemes, or data distribution layouts, are named by the word "RAID" followed by a number, for example RAID 0 or RAID 1. Each scheme, or RAID level, provides a different balance among the key goals: reliability, availability, performance, and capacity. RAID levels greater than RAID 0 provide protection against unrecoverable sector read errors, as well as against failures of whole physical drives.