Telstra has revealed the addition of almost one million new mobile services in the six months to December 2011, but Sensis revenues plummeted 24 percent in 12 months.
VirtualBox is increasingly being seen as an alternative to virtualisation software from VMware and other vendors. The latest version presents further challenges to the better-known alternatives.
VirtualBox is a virtualisation system for x86 hardware from Sun Microsystems. It is offered in two editions: the full version is free for personal and evaluation use (enterprise users are required to purchase licences); while the Open Source edition (VirtualBox OSE) is released under the GPL.
The full version includes an RDP server, USB support (including USB over RDP), iSCSI support, a virtual SATA controller, a virtual Gigabit Ethernet controller, and Web Services interfaces to VirtualBox itself.
USB over RDP is a handy feature that allows a virtual machine to access USB devices that are connected to the RDP client that's using the VM.
Version 2.1.0 is described as "a major update" and includes support for Intel's Nehalem virtualisation enhancements, full support for VMDK (VMware) and VHD (Virtual PC) virtual disk files, and new implementations of NAT and Host Interface Networking (the latter for Windows and Linux hosts only).
Also new are support for hardware virtualisation on Mac OS X hosts, and experimental support for 64-bit guests on 32-bit hosts, 3D acceleration via OpenGL, and virtual LsiLogic and BusLogic SCSI controllers.
VirtualBox 2.1.0 also delivers a wide range of performance and stability changes, along with other bug fixes.
VirtualBox 2.1.0 is available for Windows, Mac OS X, Linux and Solaris hosts.
The part-open, part-closed source model presents some issues for those who may be interested in contributing to the development effort. Even though the source code is released under the GPL (essentially preventing anyone else from producing a closed-source derivative), Sun will not accept contributions covered by the GPL as that would prevent the company from incorporating it in its own closed-source edition.
Instead, Sun invites contributions under either the Sun Contributor's Agreement (which gives the company the right to re-licence the material) or under the MIT licence (which allows anyone to use the material in open or closed source projects).
David Bass
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