The Certkiller Administrator wants to know from the trainee which of the following RAID implementations are considered to be a low-efficiency error correction method?

A.
RAID 1+0

B.
RAID 0+1

C.
RAID 0+5

D.
RAID 3

Explanation:
The RAID 3 specification is designed to use parallel transfers similar to RAID 2, along with byte-level parity striping and is effectively a low-efficiency error correction method.
Incorrect Answers:
A: The RAID 1+0 combination applies RAID 1 first, after splitting the eight drives into four sets of two drives each.
B: The RAID 0+1 combination of implementations uses RAID 0 strictly because of its high performance and RAID 1 for its high fault tolerance.
C: The RAID 0+5 implementation is used to form large arrays by combining the block striping and parity features of RAID 5 with the straight block striping of RAID 0.
Reference:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 187, pg 188