CompTIA
CV0-003 · Question #343
CV0-003 Question #343: Real Exam Question with Answer & Explanation
The correct answer is A: RAID 0. RAID 0 (striping) maximizes both read and write throughput by distributing I/O across all drives simultaneously, with no fault tolerance overhead.
Cloud Architecture and Design
Question
A storage technician must implement a RAID configuration on a new database server. The database is required to process a large number of parallel read and writes; therefore, the storage administrator must select the appropriate array to maximize both read and write throughput. There is no concern for storage fault tolerance, since the database server will be joined to an existing cluster. Which of the following should the storage administrator implement?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 6
Explanation
RAID 0 (striping) maximizes both read and write throughput by distributing I/O across all drives simultaneously, with no fault tolerance overhead.
Common mistakes.
- B. RAID 1 mirrors data across two drives, which provides fault tolerance but halves usable capacity and does not improve write performance since every write must be committed to both drives simultaneously.
- C. RAID 5 uses distributed parity across three or more drives, which introduces a write penalty because parity must be recalculated on every write operation, degrading write throughput compared to RAID 0.
- D. RAID 6 uses double distributed parity, incurring an even larger write penalty than RAID 5 due to two parity calculations per write, making it the worst choice for maximizing write throughput.
Concept tested. RAID 0 striping for maximum I/O throughput
Topics
#RAID 0#storage performance#fault tolerance#parallel I/O
Community Discussion
No community discussion yet for this question.