Learn why redundancy is the main advantage of RAID 1, as required for the CompTIA A+ Core 1 220-1101 exam. Discover how RAID 1 mirroring protects data and ensures high availability for critical systems.
Table of Contents
Question
A technician is setting up a RAID 1 array. What is the primary benefit of this configuration?
A. Redundancy
B. Speed improvement
C. Capacity increase
D. Lower cost
E. Single-drive operation
Answer
A. Redundancy
Explanation
RAID 1 mirrors data across two drives, providing fault tolerance.
RAID 1, also known as mirroring, stores identical copies of data on two or more disks. The primary benefit of this configuration is redundancy: if one drive fails, the system continues to operate using the remaining drive(s) without data loss or interruption. This makes RAID 1 ideal for environments where data reliability and availability are critical, such as mission-critical servers or small business systems. While RAID 1 can offer some improvement in read speed (since data can be read from any drive in the array), its main purpose is to provide fault tolerance and data protection—not increased capacity or lower cost. The array remains operational as long as at least one drive is functional, ensuring continuous access to data even in the event of hardware failure.
CompTIA A+ Core 1 220-1101 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA A+ Core 1 220-1101 exam and earn CompTIA A+ Core 1 220-1101 certification.