HP NetStorage 6000 - Manual (Page 13)

Overview
HP NetStorage 6000 Hardware
1-6
The illustration in figure 1.3 on page 1-5 shows a logical drive that consists
of three physical drives. This logical drive has been broken down into four
partitions (the maximum number). Typically, you create partitions such that
each one becomes a file volume. However, at some point you may require
more storage space for a file volume.
Increasing Storage Capacity
An important aspect of managing file volumes is the concept of expanding
volumes. If, at a later date, a file volume becomes full of data, you can
expand the file volume, thus alleviating the lack of space on the volume.
Just like creating new file volumes, expanding file volumes need storage
space from a logical drive, and a free partition. However, this free space
and free partition do not have to be on the same logical drive as the file
volume that is being expanded. Thus, it is possible to create file volumes
that span across logical drives. This gives you the option of expanding
existing volumes by installing another logical drive on the system.
The example shown in figure 1.4 on page 1-7 expands on the previous
example by adding a new logical drive consisting of five newly added
physical drives. This logical drive has had one partition defined. File
volume 3 has then been expanded to include this newly available space.