February 2015
Beginner to intermediate
576 pages
16h 15m
English
Content preview from Big Data Analytics
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36 • Big Data Analytics
increased capacity of these smaller drives, thanks to such technological
developments, made possible the rise of the redundant array of indepen-
dent disks (RAID).
26
e RAID is an important development, as some of the concepts
will reappear in later discussions of big data. RAIDs resulted from the
appearance of the physically small, low-cost hard disk drive along with
the concept of “data striping” attended by redundant storage. is lat-
ter development originates from a 1978 patent awarded to Norman Ken
Ouchi.
27
Striping is the splitting of data, storing it in “stripes” across
separate disks. As the data are stored across disks, they can be accessed
more quickly than data stored on one disk. If we think of a three-d
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