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RAID — which stands for Redundant Array of Inexpensive Disks [1], or sometimes alternatively Redundant Array of Independent Disks[2]) — is a technology that employs the simultaneous use of two or more hard disk drives to achieve greater levels of performance, reliability, and/or larger data volume sizes.
"RAID" is now used as an umbrella term for computer data storage schemes that can divide and replicate data among multiple hard disk drives. RAID's various designs all involve two key design goals: Increased data reliability and increased input/output performance. When several physical disks are set up to use RAID technology, they are said to be in a RAID array. This array distributes data across several disks, but the array is seen by the computer user and operating system as one single disk. RAID can be set up to serve several different purposes.
"RAID" is now used as an umbrella term for computer data storage schemes that can divide and replicate data among multiple hard disk drives. RAID's various designs all involve two key design goals: Increased data reliability and increased input/output performance. When several physical disks are set up to use RAID technology, they are said to be in a RAID array. This array distributes data across several disks, but the array is seen by the computer user and operating system as one single disk. RAID can be set up to serve several different purposes.
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RAID is an acronym for a Redundant Array of Independent Disks. There are a few variations of RAID configurations. RAID 0, 1, 5, 10, and a few others.
RAID 0 stripes data onto more than one disk for faster access.
RAID 1 mirrors data on two or more disks for back-up redundancy.
RAID 5 uses parity to provide redundancy and allows a single disk to fail without losing data.
RAID 10 (1 + 0) provides redundancy plus striping for faster access with redundancy.
The idea behind RAID mirroring is that if you have enough storage, you can write data in a manner that protects your data against data corruption or disk failures. RAID striping runs multiple disks in parallel for faster access.
For more, see
en.wikipedia.org
RAID 0 stripes data onto more than one disk for faster access.
RAID 1 mirrors data on two or more disks for back-up redundancy.
RAID 5 uses parity to provide redundancy and allows a single disk to fail without losing data.
RAID 10 (1 + 0) provides redundancy plus striping for faster access with redundancy.
The idea behind RAID mirroring is that if you have enough storage, you can write data in a manner that protects your data against data corruption or disk failures. RAID striping runs multiple disks in parallel for faster access.
For more, see
en.wikipedia.org
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