Disk Mirroring and Its Benefits

What is disk mirroring/duplexing also known as?

A. RAID 0

B. RAID 1

C. RAID 2

D. RAID 3

Answer:

Disk mirroring/duplexing is also known as RAID 1.

Disk mirroring/duplexing, also known as RAID 1, is a data storage technology that copies the same data onto two separate disks for redundancy and fault tolerance.

RAID stands for Redundant Array of Independent Disks, a technology that uses multiple hard drives to share or replicate data to enhance performance and data reliability. In the case of RAID 1, the same data is written to two separate disks simultaneously. This ensures that if one disk fails, the other disk can be used as a backup, preventing data loss and ensuring continued operation.

RAID 1 provides fault tolerance, meaning that even if one disk fails, the system remains operational. However, RAID 1 does not offer improved read and write speeds compared to using a single disk.

In summary, RAID 1 is a reliable and simple solution for data redundancy and fault tolerance. It is widely used in systems where data integrity and continuity are of utmost importance.