Hyper-V Virtual Hard Disk VHD Performance

This is one of the main consideration we have to think when we are doing an Hyper-V infrastructure desing. Great document discussing Virtual Hard Disk performance with Windows 2008 R2 Hyper-V . There are some comparison between different kind of disks and also some analisys with different applications and workload.

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