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In the world of Linux, ensuring data redundancy and improving performance can often be achieved through the use of RAID (Redundant Array of Independent Disks) configurations. RAID allows you to manage multiple hard drives, improving their fault tolerance and read/write speeds. In this guide, we'll discuss how to configure RAID arrays in Linux, covering the different types of RAID levels and providing step-by-step instructions for setting up RAID using MDADM, a widely used tool in the Linux ecosystem. Before setting up RAID, it's important to understand the different RAID levels: RAID 0 (Striping): Splits data across multiple disks, offering increased performance but no redundancy.