The Microsoft Windows Server Team announced today that Service Pack 1 for Windows Server 2008 R2 and Windows 7 was released to manufacturing (RTM) today. Along with numerous bug fixes and security improvements, SP1 offers two significant new features: Dynamic Memory and RemoteFX.
Dynamic Memory pools all the memory available on a physical host and then dynamically distributes available memory, as it is needed, to virtual machines running on that host. With Dynamic Memory Balancing, virtual machines will be able to receive new memory allocations, based on changes in workload, without a service interruption. This is particularly useful in VDI implementations.
Fellow MVP Mark Wilson describes Dynamic Memory very well:
"Microsoft’s dynamic memory is not the same as VMware’s – it’s all about over-subscription vs. over commitment. Whereas VMware will overcommit memory and then de-duplicate to reclaim what it needs, Microsoft takes the approach of only providing each VM with enough memory to start up, monitoring performance and adding memory as required, and taking it back when applications are closed."RemoteFX lets you virtualize the Graphical Processing Unit (GPU) on the server side and deliver rich media and 3D user experiences for VDI clients.
Service Pack 1 for Windows Server 2008 R2 and Windows 7 will be available to current customers of the Windows Volume Licensing program, as well as MSDN and TechNet subscribers on February 16, 2011. On February 22, both will be available to all customers through Windows Update and will also come preinstalled on new servers ordered.