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  • RAID

    @vishwanath.rana
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    RAID or Redundant Array of Independent Disks is a method by which we store the same data in several places on different hard disks. By Implementing RAID we can Make Input/Output operation to overlap in good proportions and it also Improve the Performance.
    Below is the list of some popular RAID type configurations used for database storage :

    1> RAID 0 - No Redundancy
    2> RAID 1 - Mirroring
    3> RAID 5 - Distributed Parity
    4> RAID 10 - Mirrored and Striped

    Below Diagram shows how the data is subsequently stored between disk drives

    alt text

    RAID Redundant Array of Independent Disks
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