Hyper-V and VHD Performance – Dynamic vs. Fixed (Windows Server 2008)

  The following graph shows the relative performances for a number of different scenarios (with Dynamic VHD being the baseline).   Fixed VHD always performs better than a Dynamic VHD in most scenarios by roughly 10% to 15% with the exception of 4k writes, where Fixed VHD performs significantly better. More


Storage improvements from Windows Server 2008 SP1 Hyper-V to Windows Server 2008 R2 Hyper-V

  The following table shows changes in storage.  Some of the changes are performance related like hot add of storage.  This helps performance by reducing the time it takes to add new storage.  The big things to note are increases in IO Sizes passed from VM’s and huge improvements in Dynamic VHDs.   Virtualization Feature…


Virtual Machine Storage

  Three type of Virtual Hard Disk (VHD): Dynamic Disk Fixed Disk Differencing Disk Pass-Through Disk ** Fixed disk and Pass-Through Disk are highly recommended for Production. ** Maximum size of VHD: 2 TB (2040 GB) There are a total of five actions that can be performed on virtual hard disks as outlined in the…


Guest Failover Clustering with VMware

  This blog discusses running a Windows Server Failover Cluster (WSFC) in a Virtual Machine (VM) on top of a VMware host.  Running a cluster in a virtualized environment is commonly referred to as "Guest Clustering".  Guest Clustering enables health monitoring of applications running within a VM, as well as application mobility to allow applications…


Hyper-V Performance and Benchmark

  Looking for performance data of Hyper-V servers or even VMware compete, will strike gold with this overview:   Title of Performance Materials Location of Material on public sites Hyper-V performance comparison: Microsoft Windows Server 2008 SP2 and R2 with Intel Xeon processor X5570- and E5450-based servers http://www.principledtechnologies.com/clients/reports/Microsoft/HyperVR2_0709.pdf 1,000,000 IOPS with iSCSI – That’s Not…


Core Configurator 2.0 for Hyper-V

  If you are using Server Core in Windows Server 2008 R2, you’ll know that there are always certain tasks you need to do upon installation to configure things like Network Configuration, Activation, Firewall, Windows Update, Hyper-V Settings. This Tool is a collection of Powershell scripts which will help provision and configure a Windows Server…


Hyper-V Update and HotFix List for Windows Server 2008 / Windows Server 2008 R2

  The following link shows the list of software updates and hotfixes for Hyper-V in Windows Server 2008 / Windows Server 2008 R2. . These updates and hotfixes can help avoid some known issues and may save you a support call. Comprehensive list of Hyper-V R2 updates/Hotfixes View Here Comprehensive list of Hyper-V updates/Hotfixes View…


Modify/Restore Physical Network Adaptor Protocol on Core or Hyper-V Server 2008/R2

  Let me take an opportunity to address Network Adaptor binding issues with Windows Core Server and Hyper-V Server 2008/R2.  While working on many deployment projects on Core or Hyper-V server where we encountered network binding issue.  Issues Like virtual adaptor removed still Physical Network protocol couldn’t restore to default settings. I found these tools…


Windows Server Virtualization Calculators

  Two ways to estimate the number and cost of Windows Server Standard Edition, Enterprise Edition and Datacenter Edition licenses needed for your virtualization scenarios:    CALCULATOR 1  CALCULATOR 2 Calculator 1 is designed to estimate the licenses and cost of Windows Server by editions and numerous Microsoft server products on a single, physical server….