Knowing how to check RAID in Linux is an important skill for system administrators. RAID (Redundant Array of Independent Disks) is a data storage technology that uses multiple disks to improve performance and data redundancy. By using RAID, you can create a fault-tolerant system that can continue to operate even if one or more disks fail.
There are several different RAID levels, each with its own advantages and disadvantages. The most common RAID levels are RAID 0, RAID 1, and RAID 5. RAID 0 provides increased performance by striping data across multiple disks. RAID 1 provides data redundancy by mirroring data across multiple disks. RAID 5 provides a balance of performance and data redundancy by using parity to protect data.