RAID 0 characteristics: Which statement is true?

RAID 0 characteristics: Which statement is true?

• A. It stripes data across disks with no redundancy.
• B. It mirrors data across disks.
• C. It provides parity-based protection.
• D. It encrypts data at rest.

Answer: (A)

RAID 0 is defined by striping data across multiple disks to boost performance while not providing any redundancy. As you write data, it’s divided into chunks and placed on different drives, allowing parallel access and higher throughput for reads and writes. The trade-off is that there’s no protection against a drive failing; if any disk in the array fails, the entire set of data is typically lost because there’s no mirroring or parity to reconstruct from. This is why the other descriptions don’t apply: mirroring across disks describes RAID 1, which duplicates data for fault tolerance; parity-based protection describes RAID 5 or RAID 6, which store parity to rebuild data after a failure; encryption at rest is a security feature external to how a RAID level stores data.

RAID 0 is defined by striping data across multiple disks to boost performance while not providing any redundancy. As you write data, it’s divided into chunks and placed on different drives, allowing parallel access and higher throughput for reads and writes. The trade-off is that there’s no protection against a drive failing; if any disk in the array fails, the entire set of data is typically lost because there’s no mirroring or parity to reconstruct from.

This is why the other descriptions don’t apply: mirroring across disks describes RAID 1, which duplicates data for fault tolerance; parity-based protection describes RAID 5 or RAID 6, which store parity to rebuild data after a failure; encryption at rest is a security feature external to how a RAID level stores data.