Device Mapper

Device Mapper is a Linux kernel framework that manages how data is stored on disk. It allows for creating flexible virtual storage devices by combining or modifying physical disks without changing the actual hardware. This technology is used to implement features like disk encryption, software RAID, or logical volumes, providing a layer of abstraction between hardware and how data is accessed. Essentially, Device Mapper enables administrators to customize and optimize storage setups for better performance, redundancy, or security.