[ Thanks to bryanjrichard for this link.
]
“One of the most common techniques to improve either data
reliability or data performance (or both) is called RAID (Redundant
Array of Inexpensive Disks). The concept was developed in 1977 by
David Patterson, Garth Gibson, and Randy Katz as a way to use
several inexpensive disks to create a single disk from the
perspective of the OS while also achieving enhanced reliability or
performance or both.“Before anyone erupts and says that RAID does not stand for
“Redundant Array of Inexpensive Disks”, let me start by stating
that was the original definition. Over time, the definition has
become more commonly known as “Redundant Array of Independent
Disks” perhaps so the word “inexpensive” isn’t associated with RAID
controllers or disks. Personally I use the original definition but
regardless, either definition means that the disks are independent
of one another. Feel free to use either definition since it won’t
change the content of this article. Now, back to our discussion of
RAID.”