LVM, or Logical Volume Manager, is a system used in computer storage management that allows users to create, resize, and manage disk storage more flexibly than traditional partitioning methods. It enables the grouping of multiple physical disks into a single logical volume, making it easier to allocate and manage storage space as needs change. With LVM, users can dynamically adjust the size of their storage volumes without needing to reboot the system or reformat disks. This capability is particularly useful for servers and systems that require efficient storage management and minimal downtime, enhancing overall system performance and reliability.