Which statement about RAID 0 is true?

Which statement about RAID 0 is true?

• A. It provides redundancy across disks
• B. It distributes data across disks to improve performance with no redundancy
• C. It mirrors data across disks
• D. It requires parity disks

Answer: (B)

RAID 0 uses striping: data is split into chunks and written across multiple drives. This parallelism lets reads and writes occur on several disks at once, which boosts performance. However, there is no redundancy—if any drive fails, the data on the other drives doesn’t provide a complete rebuild, so you can lose everything. There are no mirrored copies and no parity information in RAID 0, so statements about redundancy, mirroring, or parity don’t apply. Therefore, the description of distributing data across disks to improve performance with no redundancy best matches RAID 0.

RAID 0 uses striping: data is split into chunks and written across multiple drives. This parallelism lets reads and writes occur on several disks at once, which boosts performance. However, there is no redundancy—if any drive fails, the data on the other drives doesn’t provide a complete rebuild, so you can lose everything. There are no mirrored copies and no parity information in RAID 0, so statements about redundancy, mirroring, or parity don’t apply. Therefore, the description of distributing data across disks to improve performance with no redundancy best matches RAID 0.