If your IBM®System p AIX hosts use AIX 5.2 or a later AIX operating system version, the Lenovo Storage V7000 system supports the ability to dynamically increase volume size.
The chvg command options make it possible to grow the size of a physical volume that the Logical Volume Manager (LVM) uses, without interruptions to the use or availability of the system. See the AIX publication System Management Guide: Operating System and Devices for more information.