Hyper-V How To: Understand VM IO for PerfTune

Tony Voellm’s blog posts bring you up to speed:

• VM IO perf depends on the type of virtual disk you are using.  Fixed / Dynamic / Diff all have different characteristics:
  • https://blogs.msdn.com/tvoellm/archive/2007/10/13/what-windows-server-virtualization-aka-viridian-storage-is-best-for-you.aspx
  • https://blogs.msdn.com/tvoellm/archive/2008/09/24/what-hyper-v-storage-is-best-for-you-show-me-the-numbers.aspx
• A component called the IO load balancer manages each VMs access to a shared volume:
  • https://blogs.msdn.com/tvoellm/archive/2008/06/18/windows-server-performance-2008-tuning-guide-now-includes-hyper-v.aspx