Red Hat SummitChapter 1. Planning a migration
You can use the Migration Toolkit for Virtualization (MTV) to plan your migration of virtual machines from the following source providers to OpenShift Virtualization destination providers:
- VMware vSphere
- Red Hat Virtualization
- OpenStack
- Open Virtual Appliances (OVAs) that were created by VMware vSphere
- Remote OpenShift Virtualization clusters
OVA migration is validated for migrating supported guest operating systems exported from VMware vSphere. For third-party networking or security appliances, check with the vendor for native QCOW2 or KVM images.
1.1. Types of migration
MTV supports three types of migration: cold, warm, and live.
- Cold migration is available for all of the source providers listed above. This type of migration migrates VMs that are powered off and does not require common stored storage.
Warm migration is available only for VMware vSphere and Red Hat Virtualization. This type of migration migrates VMs that are powered on and does require common stored storage.
These two types of migration are discussed in detail in About cold and warm migration.
Live migration is available only for migrations between OpenShift Virtualization clusters or between namespaces on the same OpenShift Virtualization cluster. It requires MTV version 2.10 or later and OpenShift Virtualization version 4.20 or later.
Live migration is discussed in detail in Live migration in MTV.
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