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What is a RAID (Redundant Array of Independent Disks)?
A data storage scheme to divide / replicate data among various disks to improve data reliability.
An exact copy (or mirror) of a set of data on two or more disks
A table's data, stored in the extents of its data segment. Each cluster has a data segment.
A synthetic benchmark with varying levels of performance improvement when using multiple HDDs or SSDs
RAID defines methods to split and duplicate information across multiple storage devices in order to improve the reliability of the information. In the event that one disk fails, it may still be possible to recover data.
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