Multiple choice technology storage

How many minimum drives are required to create R5 (RAID 5)?

  1. 1

  2. 3

  3. 5

  4. 7
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RAID 5 requires a minimum of 3 disks because it uses block-level striping with distributed parity. With 2 disks, you cannot have both data stripes and parity distributed across them - that would require RAID 1 (mirroring) instead.

AI explanation

To create a RAID 5 configuration, a minimum of three drives is required.

In RAID 5, data is striped across multiple drives with parity information distributed among the drives. This provides fault tolerance, as the parity information allows for the reconstruction of data in case of a drive failure. Each drive in the RAID 5 array stores both data and parity information.

To ensure redundancy and fault tolerance, RAID 5 requires at least three drives. This way, if one drive fails, the data can still be reconstructed using the parity information on the remaining drives.

Therefore, the correct answer is B) 3.

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