The array of disk drives is based on the theory that if a hard drive is already a good thing, two units
disk is twice as good and five units quintuplicam this positive quality.
Using multiple units of
hard drive configured for the operating system to function as if there were only one, the personal computer can
acquire great speed when reading data or greater protection against the loss of these.
In fact, one can achieve
it economically.
The most common type of vector units is called RAID (an acronym for Redundant Array of Inexpensive Drives) or vector
redundant units cheap.
Models with greater capacity and speed, the cost of hard drives has increased.
But
with RAID, you can use multiple disk drives cheaper and have a total cost less than a model of high
performance, uniting similar performance and greater data security.
RAIDs using a combination of mirroring and / or entanglement, both methods provide great protection against
data loss.
Mirroring, in which a disc is direct copy of the other, produces a great increase in performance, but it has
high cost.
The entanglement, in which the files are spread across multiple disks and protected against data loss
another disk, is used when data protection is required and performance has priority.
Typically, the vectors of disk drives in PCs are rare independent because, despite the tactic being used
inexpensive disks, the vector as a whole is still expensive compared to the cost of most of the individual components
the PC.
Vectors are more common in PCs that function as servers LANs.
Source: Evolution of Computers
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