Logical versus Physical Space

When working with volumes, it is important to understand the difference between logical space and physical space.

Physical storage resources are aggregated into storage pools from which the logical storage is created. It allows you to have a logical space for data storage on physical storage disks by mapping space to the physical location. Physical space is the actual space on the hardware that is used.

Logical space is space that the system manages, such as the volume size. In this case, the volume size is not necessarily the actual amount of space on a physical disk, but the amount of space defined for a volume, which may span multiple physical disks.