Which of the following has incorrect RAID level mappings?
i.0 – Data striped over several drives. No redundancy or parity is involved
ii. 1 – Mirroring of drives
iii. 2 – Data striping over all drives at the bit level.
iv. 3 – Data striping over all drives and parity data held on one drive
A.
None of them
B.
All of them
C.
iii
D.
iv
Explanation:
RAID 0 – Data striped over several drives. No redundancy or parity is involved.
RAID 1 – Mirroring of drives. Data are written to two drives at once.
RAID 2 – Data striping over all drives at the bit level.
RAID 3 – Data striping over all drives and parity data held on one drive.