The Certkiller administrator is in the process of configuring a new RAID array and wants to know which of the RAID levels uses data striping with error recovery, and is designed for use when high data-transfer rates are required?
A.
RAID 3
B.
RAID 2
C.
RAID 0
D.
RAID 5
Explanation:
The RAID 2 specification employs multiple disks for error detection and correction thus it reserves large portions of the array for non-data-storage overhead, depending on the error detection and correction algorithms used in the implementation.
Incorrect
Answers:
A:The RAID 3 specification is designed to use parallel transfers similar to RAID 2, along with byte-level parity striping.
C: RAID 0 is the simplest level, and uses disk striping without parity thus it requires less time for disk access, but no redundancy or error correction is provided making this type of RAID solution only to be used when reliability is not vital.
D: RAID 5 is used to distributes its parity blocks among its independent data disks.
Reference:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 187