Creation of live snapshots is now supported. Snapshots of a virtual machine can now be created without first having to stop it.

Support for creating virtual machines from snapshots has been added. This allows users to create copies of the state of a virtual machine as it was at the specific point in time at which the snapshot was taken.

Disks now have an elevated status and can be managed as objects in their own right. New features enabled by this change include floating disks and shared disks. Once you have installed Red Hat Enterprise Virtualization Manager, log in to the Administration Portal and click the Disks tab to begin managing disks.

It is now possible to attach disks to, and detach disks from, virtual machines without first having to stop the virtual machine.

It is now possible to attach any block device to a virtual machine as a disk by specifying the block device's GUID. It is no longer necessary to use the directlun VDSM hook script to perform this task.

It is now possible to create a virtual machine which has disks on multiple different storage domains. Previously all disks for a virtual machine had to be stored on the same storage domain.

Support has been added for storage domains backed by POSIX compliant file systems. This support enables the use of file systems other than those already supported by Red Hat Enterprise Virtualization.

Support for storage exported using NFSv4 has been added to Red Hat Enterprise Virtualization. In addition it is now possible to set additional NFS mount options from the Administration Portal.

When a storage domain becomes temporarily inactive or non-operational Red Hat Enterprise Virtualization Manager will now automatically recover and update the status of the storage domain as Up when it becomes available again.

Hosts now have an SPM Priority attribute allowing administrators to influence the SPM selection process. Valid priority values range are Low, Normal, and High. Hosts with a priority of High are most likely to be selected by the Manager as the SPM. By default all hosts are assigned an SPM priority of Normal until such time as an administrative user changes it.

Initial support for storage live migration is available in Red Hat Enterprise Virtualization 3.1. This allows migration of virtual machine disks to different storage devices without first shutting the virtual machine down. This functionality is offered as a technology preview.

Initial support for managing Red Hat Storage volumes and bricks using Red Hat Enterprise Virtualization Manager is offered as a technology preview.