Administering Windows Server Hybrid Core Infrastructure (AZ-800) Practice

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What is the minimum number of disks required to create a virtual disk with the mirror storage layout?

The correct answer is: 2

To create a virtual disk with a mirror storage layout, at least two disks are required. This is because a mirrored storage layout, also known as RAID 1, duplicates the data on one disk to another to ensure redundancy and data protection. When a write operation occurs, the data is simultaneously written to both disks. Having just one disk would not allow for data duplication, thus failing to meet the requirements of a mirror setup. Similarly, while it is technically possible to use more than two disks for mirroring (for example, you could have a multi-mirror configuration), the minimum number needed to achieve effective mirroring is two. Therefore, the answer is two disks, reflecting the basic principle of redundancy essential to a mirrored storage strategy.