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Wednesday, 25 January 2012

What is RAID?

1/25/2012 11:40:00 pm  Unknown  No comments


RAID

RAID an acronym for Redundant Array of Independent Disks or Redundant Array of Inexpensive Disks. RAID is defined as having several methods of configuring multiple hard drives to store data to increase logical volume size and improve performance, or to ensure that if one hard drive fails, the data is still available from another hard drive. It is also defined as an arrangement of several hard drives in the same computer that act as if they were a single drive. A RAID is designed to protect against drive failure or improve performance. RAID in general is a group of two or more hard drives that contain the same data. Data is distributed across the drives in one of several ways called "RAID levels"; this concept is an example of storage virtualization and was first defined by David A. Patterson, Garth A. Gibson, and Randy Katz at the University of California, Berkeley in 1987 as Redundant Arrays of Inexpensive Disks.


Pictures

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