Which RAID level is used here?

Will is working as a Network Administrator. Management wants to maintain a backup of all the company data as soon as it starts operations. They decided to use a RAID backup storage technology for their data backup plan. To implement the RAID data backup storage, Will sets up a pair of RAID disks so that all the data written to one disk is copied automatically to the other disk as well. This maintains an additional copy of the data.

Which RAID level is used here?
A . RAID 3
B . RAID 1
C . RAID 5
D . RAID 0

View Answer

Answer: B

Explanation:

The RAID level used here is RAID 1, which is also known as disk mirroring. In this setup, all the data written to one disk is automatically copied to another disk, creating an exact duplicate of the data. This ensures that if one disk fails, the data is still available on the other disk, providing redundancy and protecting against data loss. RAID 1 is a common choice for systems where data availability and integrity are critical.

Reference: This explanation is consistent with the principles outlined in the EC-Council’s Certified Network Defender (CND) course materials, which describe RAID 1 as a configuration that duplicates data across multiple disks to ensure redundancy and data availability1.