Minimal downtime when moving virtual machines from one host to other host servers .
Providing the support for host-to-host connectivity and enabling users to cluster all virtual machines running on a host.
Server Core role
Hyper-V is now available as a role in a Server Core installation of Windows Server 2008.
Integrated into Server Manager
Hyper-V is integrated into Server Manager, where customers can now enable its role.
Live Backups with VSS
Hyper-V includes support for Volume Shadow Copy Services (VSS), which enable us to take Live Backups of running virtual machines in terms of snapshots.
Hyper-V also includes support for VHD tools, which enable compaction, expansion and inspection of Hyper-V-created VHDs .
Linux integration component
Components of Beta Linux integration are now available for SUSE Linux Enterprise Server 10 SP1 x86 and x64 Editions. The integration provides improved performance by enabling Xen-enabled Linux to take advantage of the VSP/VSC architecture. Beta Linux Integration components are available for immediate download through connect.microsoft.com.
Customers can easily import/export virtual machine settings to take backups of configurations and to clone the virtual machine characteristics across different hosts.
Hyper-V includes several fixes to improve performance. The integration components are automatically included by all new Windows Server 2008 virtual machines .
Improved access control with AzMan
Hyper-V now includes support for Authorization Manager (AzMan), which enables Role-Based Access Control models for better administration of the Hyper-V environment with increased security.
Hyper-V supports remote management and also provides a Hyper-V MMC only installation option for a separate management node.
Increased Virtual SCSI support
Hyper-V includes support for up to four virtual SCSI controllers per virtual machine, therefore enabling broader disk support.
Increased Memory Support
Hyper-V supports up to 64GB of memory per virtual machine.
Hyper-V provides administrators the option to quickly Reset Checkboxes and Delete saved credentials that are used to connect to virtual machines.