3PAR InForm® OS 2.3.1 CLI Administrator's Manual (320-200180 Rev B, February 2010)

7.14
Growing Virtual Volumes
3PAR InForm CLI Administrator’s Manual InForm OS Version 2.3.1
◆ <user_CPG> is the name of the CPG from which the modified virtual volume will draw
its user space.
◆ <VV_name> is the name of the virtual volume being modified.
For a complete list of options available for the
setvv command, see the InForm OS Command
Line Interface Reference and InForm CLI Help.
7.10 Growing Virtual Volumes
You can increase the size, or grow, an existing virtual volume’s user space automatically when
the volume reaches capacity.
 To automatically increase the user space available to a virtual volume when the volume
reaches capacity, issue the
growvv <VV_name> <size g|G|t|T> command, where:
◆ <VV_name> is the name of the virtual volume you are growing.
◆ <size g|G|t|T> is the amount of space automatically added to the user space in MB,
GB, or TB. If
g|G|t|T is not specified, VV_size is the number of MBs.
For a complete list of options available for the
growvv command, see the InForm OS
Command Line Interface Reference and InForm CLI Help.
7.11 Reducing Volume Size with 3PAR Thin Conversion
3PAR Thin Conversion is an optional feature that converts a traditional volume to a Thinly-
Provisioned Virtual Volume (TPVV). Virtual volumes with large amounts of allocated but
unused space are converted to TPVVs that are much smaller than the original volume. Volumes
are converted by creating a physical copy of the volume. During the conversion process,
allocated but unused space is discarded and the result is a TPVV that uses less space than the
original volume. To covert volumes located on an InServ Storage Server, you must have an
InServ F-Class or T-Class Storage Server to perform the copy operation.
The conversion process has four steps.
1 Assessment.
2 Data preparation.
3 Zeroing unused space.
4 Creating a physical copy.