What technology uses multiple low-cost drives to enhance performance and provide redundancy?

The technology that utilizes multiple low-cost drives to enhance performance and provide redundancy is known as a Redundant Array of Independent Disks (RAID). RAID combines several physical disk drive components into a single logical unit for the purposes of data redundancy and improved performance. By using various configurations, such as striping, mirroring, or parity, RAID can provide fault tolerance, which protects data in case of a drive failure. Additionally, distributing data across multiple drives can increase read and write speeds, resulting in better overall performance.

Other options, such as disk mirroring, are specific techniques used within RAID configurations to duplicate data for redundancy but do not involve the broader approach of combining multiple drives for performance enhancement. Cloud storage refers to remote data storage solutions that may employ redundancy and performance strategies internally but does not specify the use of multiple drives as its core technology. Similarly, network-attached storage describes a dedicated file storage device that enables multiple users and devices to retrieve data from centralized disk capacity but does not inherently address the performance or redundancy aspect through the use of multiple drives like RAID does.