3PAR InFormĀ® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

InForm OS Version 2.3.1 3PAR InForm OS Concepts Guide
10.1
Virtual Volumes
10
Virtual Volumes
In this chapter
10.1 Overview 10.1
10.2 Virtual Volume Types 10.2
10.2.1 Administrative Volumes 10.3
10.2.2 Fully-Provisioned Virtual Volumes 10.3
10.2.3 Thinly-Provisioned Virtual Volumes 10.4
10.3 Physical Copies 10.6
10.4 Virtual Copy Snapshots 10.7
10.5 Exporting Virtual Volumes 10.11
The purpose of this chapter is to explain how different types of virtual volumes and copies of
volumes function, and to provide planning considerations for creating your own virtual
volumes.
10.1 Overview
Volumes draw their resources from Common Provisioning Groups (CPGs), and volumes are
exported as Logical Unit Numbers (LUNs) to hosts. Virtual volumes are the only data layer