HP StorageWorks 8000 NAS - Manual (Page 23)

NAS 8000 Concepts 21
NAS 8000 Concepts
Understanding Physical and Logical Storage
The storage space on your HP NAS 8000 is made up of physical storage and
logical storage for a direct-attached and SAN configuration. Before you
begin planning your storage, you need to understand the following concepts.
Physical storage refers to the hardware used for data storage. The physical
storage components of the HP NAS 8000 are the disk drives.
Logical storage is created by software that lets you combine disk space from
multiple physical disks into a logical volume. The logical storage components
of the HP NAS 8000 include:
■ Logical unit numbers (LUNs)
■ Volume groups
■ File volumes
■ Directories
■ Snapshots
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