This section explains how to migrate a VM guest to a VM host on a different physical server.
Two methods of VM guest migration are available in Resource Orchestrator. Although such methods are named differently depending on the server virtualization software used, Resource Orchestrator makes use of the following naming convention.
For details on migration pre-requisites and terminology, refer to "9.2.2 Functional Differences between Products" in the "Design Guide VE".
Live Migration
Migration of a VM guest without shutting down its VM host.
Cold Migration
Migration of a VM guest while its VM host is shut down. A VM guest after migration is set to the same power status as it was before the migration.
The availability of those methods depends on the power status of VM guests, as described below.
VM Guest Power Status | Migration Method | |
|---|---|---|
Cold Migration | Live Migration | |
ON | Available | Default |
OFF | Default | N/A |
Default: This method is available and selected by default.
Available: This method is available.
N/A: This method is not available.
A VM guest after migration is set to the same power status as it was before the migration. For example, performing a cold migration on an operating VM guest will temporally shut it down during migration, before starting it up again after completion of the migration process. It is therefore recommended to set the target VM guest to the desired post-migration power status before performing migration.
Use the following procedure to migrate a VM guest.
In the ROR console server resource tree, right-click a VM guest to migrate and select [Migrate VM Guest] popup menu.
The [VM Guest Migration] dialog is displayed.
Set the following items:
Select a destination VM host.
Select the desired migration type.
Click [OK].
The selected VM guest is migrated to its new host.
VM guests can be migrated from the command-line, using the rcxadm server migrate command.
For details, refer to "3.4 rcxadm server" in the "Reference Guide (Command) VE".
