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Windows Server 2008 R2 Virtual Hard Disk (VHD) Performance Paper

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If you have been looking for VHD performance data the paper below should give you a lot of what you have been looking to find.  The paper compares VHD performance on Windows Server 2008 and Windows Server 2008 R2.  It uses the new Native VHD implementation for R2 and loopback VHD 2008.  There are some Virtual Machine (VM) comparisons as well for completeness.

https://download.microsoft.com/download/0/7/7/0778C0BB-5281-4390-92CD-EC138A18F2F9/WS08_R2_VHD_Performance_WhitePaper.docx

  Enjoy,

     Tony

Comments

  • Anonymous
    March 25, 2010
    Tony, very interesting document, thank you! But can I ask one question? In document in section 6 in the table of VHD types compare I found such "cons" about dynamic VHD disks: "Defrag is not recommended due to inherent re-directional layer." But in document no any word about defrag except this. Also, all what I read before about defrag VMs is "use it like real machines" - i.e. use defrag tools. Can you comment this more detailed? (or, may be, make a blog post about defrag of VMs (VHDs) (does we need it to do/how to/how often/what tools to use) ps: sorry for poor English.