9.1. RAID

RAID stands for “redundant array of independent disks” (originally the term inexpensive was used instead of independent). RAID was invented at the University of California in what is now famously termed “The Berkeley Paper” in 1988. It is a common offering from many vendors. In 1993, the RAID Advisory Group formed the RAID Conformance Program whereby vendors would ensure that their hardware passed the conformance test in return for certification by the RAID Advisory Board, including permission to use the official RAID logo on their devices. The different versions of RAID provide different levels of performance and data protection, and the implementations used differ for those particular needs.

An idea that is common to almost all the ...

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