The Certkiller Administrator wants to know from the trainee which of the following RAID implementations will have a problem with one missing bit/byte/block in a row, which causes your systems algorithms of no longer being able to reconstruct the missing data?
A.
RAID 1+0
B.
RAID 0+1
C.
RAID 5+3
D.
RAID 3, 4, 5
Explanation:
There is one common problem when RAID 3, 4 and 5 are used and that is that if there is one missing bit/byte/block in a row, the system’s algorithms will no longer be capable of reconstructing the missing data.
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 5+3 implementations is a combination of RAID 0 and RAID 3 and is effectively a configuration of striped array (RAID 0) whose segments are essentially RAID 3 arrays.
Reference:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 188