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What is raid, and how it can influence database performance?
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Answer Posted / Ashok Kumar Swarup
RAID (Redundant Array of Inexpensive Disks) is a method of storing data on multiple disks for increased performance and redundancy. RAID can influence database performance in several ways:n1. Increased read and write speed: RAID 0, also known as striping, writes the same data across multiple disks simultaneously, increasing read and write speed.n2. Data availability: RAID 1, mirroring, maintains a duplicate of all data on separate disks, ensuring that data is still accessible if one drive fails.n3. Fault tolerance: Other RAID levels (RAID 5, RAID 6) provide parity information to recover data in case of drive failure.n4. Wear leveling: Distributing write operations across all disks in a RAID array can help prevent individual drives from wearing out too quickly.
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