LVM is commonly used for the following purposes:
Managing large hard disk farms by allowing disks to be added and replaced without downtime or service disruption, in combination with hot swapping.
On small systems (like a desktop at home), instead of having to estimate at installation time how big a partition might need to be in the future, LVM allows file systems to be easily resized later as needed.
Performing consistent backups by taking snapshots of the logical volumes.
** Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID 0, bu…