کد:
http://www.hyper-v-mart.com/HowTo/Convert_Hyper-V_Dynamic_Disk_to_Fixed_Disk.aspx
Problem

Using fixed disk is one of best practices of Hyper-V deployment. It leads to 1) Less likely to fragment and better space management 2) Better performance by roughly 10% to 15%.
Step by Step Guide

1) Open Windows Hyper-V Manager


2) Turn off the Virtual Machine whose disk file you want to concert

Right click Virtual Machine name and select "Turn Off".

3) Right-click the Virtual Machine and select 'Settings...'


4) Select the Virtual Machine's hard drive and click 'Edit'


5) Select 'Convert' and click 'Next'


6) Input the path to which you want output fixed disk file, and click 'Next'.


7) Click 'Finish' to start conversion

If the host server installed IDE SATA disk, it takes about 1 hour to convert a 40G disk file. The time will increase proportionally, if the disk file is larger





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