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Which of the following provides the LEAST availability?

Which of the following provides the LEAST availability?

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A.
RAID 0

B.
RAID 1

C.
RAID 3

D.
RAID 5

Explanation:
RAID, or redundant array of independent disks (RAID). RAID allows your existing servers to have more than
one hard drive so that if the main hard drive fails, the system keeps functioning. RAID 0 is disk striping. It uses
multiple drives and maps them together as a single physical drive. This is done primarily for performance, not
for fault tolerance. If any drive in a RAID 0 array fails, the entire logical drive becomes unusable.

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