Free Space; Partitions - Adaptec DuraStor 7220SS User Manual

Figure A-1 represents an array made up of two disk drives. The
free space of the larger drive is not used.
Partition A1 (Used)
Figure A-1 One array made up of two disk drives

Free Space

Free space refers to the space on a an initialized disk drive that is not
in use by an array. Arrays are created from free space, therefore
creating an array reduces the amount of free space on a disk drive.
When you delete an array, its space is returned to free space.

Partitions

A partition is a subdivision of a disk or storage area. There are three
main types of partitions:
1
A portion of a physical or virtual disk drive that functions as a
separate unit which the operating system sees as a separate
device. These partitions are usually created by the operating
system.
Drive 1
Storage Concepts
Array A
Drive 2
Partition A2 (Used)

Free Space

A-4