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RAID and Data Storage Protection Solutions for Linux

When a system administrator is first asked to provide a reliable, redundant means of protecting critical data on a server, RAID is usually the first term that comes to mind. In fact, RAID is just one part of an overall data availability architecture. RAID, and some of the complimentary storage technologies, are reviewed below.

RAID, short for Redundant Array of Inexpensive Disks, is a method whereby information is spread across several disks, using techniques such as disk striping (RAID Level 0) and disk mirroring (RAID level 1) to achieve redundancy, lower latency and/or higher bandwidth for reading and/or writing, and recoverability from hard-disk crashes. Over six different types of RAID configurations have been defined. A brief introduction can be found in Mike Neuffer's What Is RAID? page.


http://linas.org/linux/raid.html
February 2014
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