RAID
RAID (Redundant Array
of Inexpensive/Independent Disks) is a term to describe several hard disks made
into one logical disk.
The main reasons why
RAID is used are:
-
To make loss of
data happen less often
-
For more storage
space
-
More flexibility
– a disabled hard drive doesn’t mean no computer
-
Access data more
quickly
The disadvantages of
RAID are:
-
Certain choices
can protect against data being lost because one (or a number) of disks failed.
This does not, however, protect against the data being deleted or overwritten.
-
After one (or a
number) of disk failures, getting the system into a clean state could take a
long time
-
RAID can be a
little challenging – some easy to make mistakes can result in nulled data
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