HP-UX vPars and Integrity VM V6.3 Administrator Guide

12 Migrating VMs and vPars
You can migrate either an offline vPar or VM, or a live online VM running a guest operating system
and applications from a source VSP system to a target VSP system, using the hpvmmigrate
command.
12.1 Introduction to migration
vPars and Integrity VM V6.3 allows the following types of migration:
• To migrate a VM or vPar from one VSP system to another, use the hpvmmigrate command.
The VM can be a non-running VM guest, a vPar configuration (offline migration) or a running
VM guest (online migration). Online migration enables a running VM and its applications to
be migrated from one VSP to another without service interruption. All VM I/O connections to
storage and networks remain active throughout the online migration, and it is not necessary
to reboot VM and restart applications.
Figure 15 Online and Offline forward migration possibilities
Offline Migration
Non running vPars/VM Guest
Online Migration
Live VM Guest and applications
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Forward Migration
Forward Migration
Forward Migration
* Only on same system type
Virtual Machines (VM) Virtual Partitions (vPars)
• To migrate a Serviceguard Packaged VM online, use the cmmovevpkg command. For more
information, see the cmmovevpkg(1M) manpage or the HP Serviceguard Toolkit for Integrity
Virtual Servers User Guide at http://www.hp.com/go/hpux-serviceguard-docs.
Figure 16 (page 196) shows the process of migrating a guest from Host A to Host B offline.
12.1 Introduction to migration 195