The internal migration feature is used to move volumes or volume groups to another appliance in the same cluster without interrupting access to the hosts. Moving resources to another appliance can help balance the capacity or performance across appliances within the cluster. This feature can also be used to migrate storage resources to another appliance to prevent disruption, such as when the appliance is being removed from the cluster or being shut down for maintenance. When you migrate a volume or volume group, all associated snapshots and thin clones also migrate with the storage resource.