A Redundant Array of Independent Disks (RAID) is a data storage technology that combines multiple physical disk drive components into a single logical unit. RAID is implemented to enhance data reliability, improve performance, or both. RAID can be configured in different ways to provide different levels of redundancy and performance. Checking RAID in a server involves monitoring the health and status of the RAID array and its individual components to ensure optimal performance and data integrity.
RAID is important for servers because it provides data redundancy and fault tolerance. In the event of a disk failure, RAID can maintain data availability by using redundant data from other disks in the array. RAID can also improve performance by distributing data across multiple disks, thereby increasing the speed of data access. Additionally, RAID can help protect data from accidental deletion or corruption.