- Physical Volumes (PVs): These are the physical disks or disk partitions that are used in LVM.
- Volume Groups (VGs): A collection of Physical Volumes that form a storage pool.
- Logical Volumes (LVs): The virtual partitions created from the Volume Groups that are used by the operating system.
Most modern Linux distributions come with LVM pre-installed. However, if it's not installed, you can add it using the package manager.