CV0-003 · Question #343
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…
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.
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
How the community answered
(31 responses)- A84% (26)
- B3% (1)
- C3% (1)
- D10% (3)
Why each option
RAID 0 (striping) maximizes both read and write throughput by distributing I/O across all drives simultaneously, with no fault tolerance overhead.
RAID 0 stripes data across all disks in the array, meaning every read and write operation is parallelized across multiple drives, delivering the maximum possible throughput. Since there is no parity or mirroring, there is no write performance penalty and no storage capacity overhead. The absence of a fault tolerance requirement makes RAID 0 appropriate here, as the cluster provides the redundancy at a higher layer.
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.
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.
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
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-direct-overview
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