Which of the following statements pertaining to RAID technologies is incorrect?
A.
RAID-5 has a higher performance in read/write speeds than the other levels.
B.
RAID-3 uses byte-level striping with dedicated parity.
C.
RAID-0 relies solely on striping.
D.
RAID-4 uses dedicated parity.
Explanation:
RAID-0 is faster than RAID-5 since RAID-0 is striping without parity, while RAID-5 uses parity which makes it
slower.
Incorrect Answers:
B: RAID-3 uses byte-level parity. The Data striping over all drives and parity data held on one drive. If a drive
fails, it can be reconstructed from the parity drive.
C: With RAID-0 the data striped over several drives. No redundancy or parity is involved. If one volume fails, the
entire volume can be unusable. It is used for performance only.
D: RAID-4 uses block-level parity. The Data striping over all drives and parity data held on one drive. If a drive
fails, it can be reconstructed from the parity drive.Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 1270