* Teleportation (aka live migration); migrate a live VM session from
one host to another
* VM states can now be restored from arbitrary snapshots instead of
only the last one, and new snapshots can be taken from other snapshots
as well (“branched snapshots”)
* 2D video acceleration for Windows guests; use the host video hardware
for overlay stretching and color conversion
* More flexible storage attachments: CD/DVD drives can be attached to
arbitrary storage controllers, and there can be more than one such
drive
* The network attachment type can be changed while a VM is running
* Complete rewrite of experimental USB support for OpenSolaris hosts
making use of the latest USB enhancements in Solaris Nevada 124 and higher
* Significant performance improvements for PAE and AMD64 guests (VT-x and
AMD-V only; normal (non-nested) paging)
* Experimental support for EFI (Extensible Firmware Interface)
* Support for paravirtualized network adapters (virtio-net)
ChangLog
Version 3.1 will be a major update. The following major new features were added:
- Teleportation (aka live migration); migrate a live VM session from one machine to another
- VM states can now be restored from arbitrary snapshots instead of only the last one, and new snapshots can be taken from other snapshots as well (aka branched snapshots)
- 2D video acceleration for Windows guests; use the host video hardware for overlay stretching and colour conversion
- The network attachment type can be changed while a VM is running
- Experimental USB support for OpenSolaris hosts making use of the latest USB enhancements in Solaris Nevada 124 and higher.
- Significant performance improvements for PAE and AMD64 guests (VT-x and AMD-V only; normal (non-nested) paging)
- Experimental support for EFI (Extended Firmware Interface)
- VirtIO network device support
Read More
Today Sun released VirtualBox 3.0, a major update introducing Symmetrical
Multiprocessing (SMP) in virtual machines as well as much improved 3D
support. See the ChangeLog
Download
I am using Xenserver 5.
Citrix has released XenServer 5.5 following is feature list.
live snapshot and clone operations on all storage types.
Active Directory integration.
Workload Balancing to optimize.
support for Red Hat Enterprise Linux 5.3, Novell SLES 11, and Debian Lenny.
XenCenter improvements.
Download XenServer
Release notes.
Download
Version 3.0 will be a major update. The following major new features were
added:
* Guest SMP with up to 32 virtual CPUs (VT-x and AMD-V only)
* Windows guests: ability to use Direct3D 8/9 applications / games
(experimental)
* Support for OpenGL 2.0 for Windows, Linux and Solaris guests
In addition, the following items were fixed and/or added:
* Virtual mouse device: eliminated micro-movements of the virtual mouse
which were confusing some applications (bug #3782)
* Solaris hosts: allow suspend/resume on the host when a VM is running
(bug #3826)
* Solaris hosts: tighten the restriction for contiguous physical memory
under certain conditions
* VMM: fixed occassional guru meditation when loading a saved state
(VT-x only)
* VMM: eliminated IO-APIC overhead with 32 bits guests (VT-x only, some
Intel CPUs don’t support this feature (most do); bug #638)
* VMM: fixed 64 bits CentOS guest hangs during early boot (AMD-V only;
bug #3927)
* VMM: performance improvements for certain PAE guests (e.g. Linux 2.6.29+
kernels)
* GUI: added mini toolbar for fullscreen and seamless mode
(Thanks to Huihong Luo)
* GUI: redesigned settings dialogs
* GUI: allow to create/remove one host-only network adapters
* GUI: display estimated time for long running operations (e.g. OVF
import/export)
* GUI: Fixed rare hangs when open the OVF import/export wizards (bug #4157)
* VRDP: support Windows 7 RDP client
* Networking: fixed another problem with TX checksum offloading with Linux
kernels up to version 2.6.18
* VHD: properly write empty sectors when cloning of VHD images (bug #4080)
* VHD: fixed crash when discarding snapshots of a VHD image
* VBoxManage: fixed incorrect partition table processing when creating VMDK
files giving raw partition access (bug #3510)
* OVF: several OVF 1.0 compatibility fixes
* Shared Folders: sometimes a file was created using the wrong permissions
(2.2.0 regression; bug #3785)
* Shared Folders: allow to change file attributes from Linux guests and use
the correct file mode when creating files
* Shared Folders: fixed incorrect file timestamps, when using Windows guest on
a Linux host (bug #3404)
* Linux guests: new daemon vboxadd-service to handle time syncronization and
guest property lookup
* Linux guests: implemented guest properties (OS info, logged in users, basic
network information)
* Windows host installer: VirtualBox Python API can now be installed
automatically (requires Python and Win32 Extensions installed)
* USB: Support for high-speed isochronous endpoints has been added. In
addition, read-ahead buffering is performed for input endpoints (currently
Linux hosts only). This should allow additional devices to work, notably
webcams
* NAT: allow to configure socket and internal parameters
* Registration dialog uses Sun Online accounts now
