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

Figure 16 Symmetric VSPs configured for guest migration
FC Port x FC Port x
FC Switch
OS Authentication
hpvmmigrate
HP VM API
OS Authentication
hpvmmigrate
HP VM API
Transfer
configuration
via SSH
VSP A (Source) VSP B (Destination)
vPar 1
vPar 1 VM 2
VM 1
LAN a LAN a
SAN
(Shared Storage)
VM 1
HP-UX OS
VM 2
HP-UX OS
vPars 1
HP-UX OS
The VM or vPar migration environment includes a source machine and a target machine. Both
must be running vPars and Integrity VM, be able to run the guests, conform to their operating
system requirements and restrictions, and must be able to provide the allocated resources to the
guest. If the guest uses 2 GB of memory on one machine, it must be able to use that amount on
the other machine. Similarly, if the source machine can provide a guest with four vCPUs, the target
machine must also be able to provide the same. To modify the virtual devices or network on the
target host, use the hpvmmodify command.
To enable migration, all resources used by the guest must be configured symmetrically on both the
source and target host. A symmetric configuration includes:
• A common LAN
• Identical subnet and vswitch connectivity
• Common access for SAN based storage
• Private, high-speed network connection (for Online VM Migration)
For guidelines about setting up storage for migrating VMs, see Section 12.3 (page 205).
If the HP Capacity Advisor is used on the VM, you must collect utilization information before
migrating the VM. The Capacity Advisor cannot continue to collect the utilization information for
the VM during the migration.
196 Migrating VMs and vPars