The Certkiller Administrator wants to know from the trainee which of the following RAID implementations requires a minimum of three drives to operate?

The Certkiller Administrator wants to know from the trainee which of the following RAID implementations requires a minimum of three drives to operate?

A.
RAID 3

B.
RAID 0+1

C.
RAID 1+0

D.
RAID 5

Explanation:
RAID 5 is used to distributes its parity blocks among its independent data disks.
Incorrect Answers:
A: The RAID 3 specification is designed to use parallel transfers similar to RAID 2, along with byte-level parity striping.
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 1+0 combination applies RAID 1 first, after splitting the eight drives into four sets of two drives each.
Reference:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 188