CompTIA
CV0-003 · Question #380
CV0-003 Question #380: Real Exam Question with Answer & Explanation
The correct answer is B: RAID 1. RAID 1 mirrors data identically across two drives, providing redundancy and the potential to distribute read operations across both drives for improved random read performance.
Cloud architecture
Question
Which of the following RAID levels is used to create a mirrored drive and can increase random read performance on the file system?
Options
- ARAID 0
- BRAID 1
- CRAID 1 + 0
- DRAID 5
Explanation
RAID 1 mirrors data identically across two drives, providing redundancy and the potential to distribute read operations across both drives for improved random read performance.
Common mistakes.
- A. RAID 0 stripes data across drives for maximum performance with no redundancy and creates no mirror, meaning any single drive failure results in total data loss.
- C. RAID 1+0 combines mirroring and striping but requires a minimum of four drives and is a nested level, not the fundamental mirroring RAID level the question targets.
- D. RAID 5 distributes parity data across three or more drives to provide fault tolerance through parity reconstruction, not through mirroring.
Concept tested. RAID 1 mirroring and random read performance
Topics
#RAID 1#disk mirroring#read performance#RAID levels
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