Migration

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Deploy virtual servers or ensure high availability during a hypervisor upgrade.

There are two ways to migrate a virtual server:
  • Definition of a virtual server on different hosts using the same configuration-XML

    To deploy a virtual server to a different host, you can copy its domain configuration-XML file to the destination host, make any necessary adjustments, and finally define a virtual server on the basis of this configuration-XML.

  • Live virtual server migration

    To provide high availability, for example during a hypervisor upgrade, you can migrate a running virtual server to a different host. You can decide whether or not the virtual server will be removed from the source host after the migration, so you can use live migration as a deployment vehicle, too.

    Live migration also provides means to migrate virtual servers offline. This option might be interesting for you if you want to deploy virtual servers and benefit from the migration automatism.

Migration to a different hypervisor release

The hypervisor release is defined by the installed QEMU release, by the hypervisor product or by your distribution on the host.

The virtual server's machine type determines which hypervisor release runs the virtual server on the host.

Be sure to configure the machine type with the alias value s390-ccw-virtio in the domain configuration-XML unless you intend to migrate the virtual server to a destination host with an earlier hypervisor release.