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OliverLennox-4187 avatar image
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OliverLennox-4187 asked ·

Converting VHD to VHDX storage requirments?

Hi there,

quick question:

When converting a VHD disk image to a VHDX image, does the host system need enough storage space to store both the VHD and the VHDX while the conversion process is running? i.e. is it like a copy job where it builds the VHDX and then deletes the VHD at the end? We have a drive with 4TB RAID and I'm trying to convert a 2TB VHD and I'm concerned that the server will run out of disk space during the conversion and corrupt the images.

Any advice would be much appreciated!

Thanks

windows-server-hyper-v
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jiayaozhu-MSFT avatar image
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jiayaozhu-MSFT answered ·

Hi,

1.The host system does need enough storage space to store both the VHD and the VHDX when the conversion process is running. More information from the Microsoft public document:
https://docs.microsoft.com/en-us/powershell/module/hyper-v/convert-vhd?view=win10-p

2.Your disk condition (4TB RAID drive and the VHD file is 2TB) may not support your conversion process to be success. The success depends largely on your existing usage of your VHD file. So, we recommend to reserve more than 4TB when you convert your VHD file to VHDx file.

3.Besides, it is suggested that you always choose "dynamically expanding" because using dynamical types can make your VHDx initial disk space a little bit smaller than using static types.

Thank you for your time! If you have any concerns and questions, please feel free to feedback.

Best regards
Joann


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Perfect, thank you

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