Making the switch to VHDX

When Microsoft released Windows Server 2012 and Hyper-V 3.0, one of the new features introduced was the Hyper-V virtual hard disk (VHDX) file format. VHDX files offer a number of performance and resiliency benefits over the VHD files previously used. In addition, VHDX virtual hard disks can be up to 64 TB in size. The limit for VHD files was a mere 2 TB.

Microsoft recommends converting all VHD files into VHDX files. However, you should only do so if you plan to host the virtual machine (VM) on a Hyper-V 3.0 server, as previous versions of Hyper-V do not support VHDX files.

VHD files can be converted to VHDX format by working through a simple wizard on the VM Settings screen. After the conversion completes, it is necessary to manually configure Hyper-V to use the VHDX file.

In this video, Brien Posey, a Microsoft MVP with two decades of IT experience, explains the benefits of using the VHDX format and provides step-by-step instructions on how to convert VHD files to VHDX files.

About the author
Before becoming a freelance technical writer, Brien Posey worked as a CIO for a national chain of hospitals and health care facilities. He has also served as a network administrator for some of the nation's largest insurance companies and for the Department of Defense at Fort Knox.

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