Which statement best describes a benefit of using RAID in storage solutions?

Which statement best describes a benefit of using RAID in storage solutions?

• A. It is more expensive than other solutions that do not include RAID.
• B. It provides degraded performance, scalability, and reliability.
• C. It provides superior performance, improved resiliency, and lower costs.
• D. It is complex to set up and maintain.

Answer: (C)

RAID uses multiple disks to spread data across them, delivering redundancy and the ability to access data in parallel. By striping data across disks, read operations can happen simultaneously on several drives, which often improves performance. Redundancy—through mirroring or parity—lets you recover data if a drive fails, boosting resiliency. And because you can achieve this protection with several inexpensive disks instead of a single high-cost drive, the cost per gigabyte can be lower. So the best description of RAID’s benefit is that it offers superior performance, improved resiliency, and lower costs. The other statements aren’t aligned with how RAID works: it isn’t inherently more expensive, it doesn’t promise degraded performance as a general rule (there is overhead in some configurations but performance often improves), and setup/maintenance complexity is not a benefit.

RAID uses multiple disks to spread data across them, delivering redundancy and the ability to access data in parallel. By striping data across disks, read operations can happen simultaneously on several drives, which often improves performance. Redundancy—through mirroring or parity—lets you recover data if a drive fails, boosting resiliency. And because you can achieve this protection with several inexpensive disks instead of a single high-cost drive, the cost per gigabyte can be lower. So the best description of RAID’s benefit is that it offers superior performance, improved resiliency, and lower costs. The other statements aren’t aligned with how RAID works: it isn’t inherently more expensive, it doesn’t promise degraded performance as a general rule (there is overhead in some configurations but performance often improves), and setup/maintenance complexity is not a benefit.