over 9 years ago
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
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