Multiple choice technology architecture

Which of the following saves data to pairs of disks as a means of redundancy ?

  1. Parity

  2. Striping

  3. Mirroring

  4. Clustering
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C Correct answer
Explanation

Mirroring (RAID 1) writes identical data to two (or more) disks, creating redundancy. If one disk fails, the data remains available on the mirror disk. This is a simple but effective redundancy technique. Striping is for performance, parity is for fault tolerance without full duplication.

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