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Is this the same thing as a RAID configuration?
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Nope, not even close.
This is from Wikipedia:
RAID, an acronym for
redundant array of independent disks, is a technology that allows high levels of storage reliability from low-cost and less reliable PC-class disk-drive components, via the technique of arranging the devices into arrays for
redundancy. This concept was first defined by
David A. Patterson,
Garth A. Gibson, and
Randy Katz at the
University of California, Berkeley in 1987 as
redundant array of inexpensive disks.
[1] Marketers representing industry RAID manufacturers later reinvented the term to describe a
redundant array of independent disks as a means of dissociating a low-cost expectation from RAID technology.
[2]
RAID is now used as an
umbrella term for
computer data storage schemes that can divide and replicate
data among multiple hard disk drives. The different schemes/architectures are named by the word RAID followed by a number, as in RAID 0, RAID 1, etc. RAID's various designs involve two key design goals: increase
data reliability and/or increase
input/output performance. When multiple physical disks are set up to use RAID technology, they are said to be
in a RAID array
[3]. This array distributes data across multiple disks, but the array is seen by the computer user and
operating system as one single disk. RAID can be set up to serve several different purposes.
To read the rest of the article, go
HERE
Better have a couple of beers while reading it!

It is quite thorough.