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

InForm OS Version 2.3.1 3PAR InForm OS Concepts Guide
11.1
Reclaiming Unused Space
11
Reclaiming Unused Space
In this chapter
11.1 Overview 11.1
11.2 Reclaiming Unmapped Logical Disk Space from CPGs 11.2
11.3 Reclaiming Unmapped Logical Disk Space from Volumes 11.3
11.4 Automatically Reclaiming Unused Snapshot Space from Volumes 11.3
11.5 Manually Reclaiming Unused Snapshot Space from Volumes 11.4
11.6 Deleted Volume’s Snapshot Space 11.4
The purpose of this chapter is to provide information about reclaiming unused space and
returning it to the pool of available space.
11.1 Overview
The InForm OS space consolidation features allow you to change the way that virtual volumes
are mapped to logical disks in a Common Provisioning Group (CPG). Moving virtual volume
regions from one logical disk to another enables you to compact logical disks, and free up disk
space so that it can be reclaimed for use by the system. For more information about virtual
volumes, see Chapter 10, Virtual Volumes.