Reference Guide - Hard Disk Drives  A Brief History of the Hard Disk Drive Construction and Operation of the Hard Disk Drive Hard Disk Geometry and Low-Level Data Structures Hard Disk Performance, Quality and Reliability Hard Disk Performance Hard Disk Quality and Reliability Redundant Arrays of Inexpensive Disks (RAID) Why Use RAID? Benefits and Costs, Tradeoffs and Limitations RAID Concepts and Issues General RAID Concepts Physical and Logical Arrays and Drives Mirroring Duplexing Striping Parity RAID Performance Issues RAID Reliability Issues RAID Levels RAID Configuration and Implementation Hard Disk BIOS and Capacity Factors Hard Disk Interfaces and Configuration Hard Disk Logical Structures and File Systems Author: Charles M. Kozierok  In this section I will start "at the beginning", describing the key concepts that define the fundamental characteristics of RAID. These are the concepts that describe how RAID works, how arrays are set up, and how different RAID levels work to improve reliability and performance. Understanding these concepts provides the foundation for our subsequent discussions of performance issues, reliability concerns, and the various RAID levels. Next: Physical and Logical Arrays and Drives

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