RAID (redundant array of inexpensive disks)

Wikipedia
http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks


References
http://www.acnc.com/raid.html (★★★★★)
http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=guide_raid
http://www.terms.co.kr/RAID.htm