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  • Blog Post: Hyper-V and Server 2008 RTM

    With general availability of Windows Server 2008 Microsoft ships the beta 1 release of Windows Virtualization or Hyper-V (aka. Viridian). Customers, partners, developers, IT Professionals, everyone buying a copy of Windows Server 2008 will have the opportunity to test drive the Microsoft hypervisor Hyper...
  • Blog Post: A Hybrid OS Cluster Solution

    Thomas Varlet, of Microsoft France, and Dr. Patrice Calegari, of BULL SAS, have written an excellent paper on how to build hybrid clusters, i.e. clusters where 2 or more operating systems can be run at the same time. It is recommended reading, in my opinion, for those of us who use both Linux and Windows...
  • Blog Post: VHD Boot

    With Windows 7 and Server 2008 R2 you get the opportunity to boot directly from a vhd file. The operating system in the vhd file will have direct access to the machine hardware. It will not run as a virtual machine with synthetic or emulated adapters, but as a “real machine”. VHD happens to be the format...
  • Blog Post: P2V with SCVMM – a quick tip

    System Center Virtual Machine Manager (SCVMM) has been offering a relatively simple way of doing physical-to-virtual migrations (P2V) for a while. You just click on the “Convert Physical Server” icon and off you go. Despite the name, it also works with client target machines. It’s simple, if you do some...
  • Blog Post: A Free Book on Microsoft Virtualization

    Understanding Microsoft Virtualization Solutions from Microsoft Press is available as a FREE download.   This 15MB E-Book gives an overview of all current Microsoft Virtualization technologies: Hyper-V, the Microsoft Enterprise Desktop Virtualization (MED-V), and VDI. It also describes which...
  • Blog Post: The Hyper-V Cloud - no clusters?

    Microsoft has recently published a set of guides to build your own private cloud solution using Hyper-V, System Center Virtual Machine Manager and its Self-Service Portal 2.0 They cover planning, deployment and operations. You can find them here. Note however that the guides assume a deployment...
  • Blog Post: Turning hyper-v on and off

    I use hyper-v on my laptop. When I know I don't need VMs for the day, I can squeeze a bit more performance out of the machine by turning hyper-v off with: bcdedit /set hypervisorlaunchtype off and a reboot. To turn it back on: bcdedit /set hypervisorlaunchtype on (or auto start) and reboot...
  • Blog Post: Live Migration, Cluster Shared Volumes & Networks

    The recommendation for people setting up live migration clusters is to isolate different kinds of traffic on their own networks: Public network to access the cluster and the virtual machines running on it “Private” cluster heartbeat network “live migration” network iSCSI network, if required to access...
  • Blog Post: Computing Utilities

    So, imagine this scenario: you have a rack full of servers that hum along at 20% of capacity, performing "mundane" tasks. Wouldn't it be nice to harness at least part of that remaining computing power for your batch calculations? Wouldn't it be nice to save some money by not having to expand that costly...
  • Blog Post: Stop Climate Change?! – Part 2

    I have been investigating some more in the area of Green IT, S+S. Some ideas and a lot of questions have come to mind. Please read on and let me know if they make any sense. By the way, Part 1 is here :-) 1. How do you understand the status quo? This may prove to be the most difficult part of...