Difference between revisions of "Virtual Hard Disk (VHD)"

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* [http://en.wikipedia.org/wiki/VHD_(file_format) VHD (file format)], by Wikipedia
 
* [http://en.wikipedia.org/wiki/VHD_(file_format) VHD (file format)], by Wikipedia
 
* [http://technet.microsoft.com/en-us/library/bb676673.aspx Virtual Hard Disk Image Format Specification], by Microsoft, October 2006
 
* [http://technet.microsoft.com/en-us/library/bb676673.aspx Virtual Hard Disk Image Format Specification], by Microsoft, October 2006
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* [http://code.google.com/p/libvhdi/downloads/detail?name=Virtual%20Hard%20Disk%20%28VHD%29%20image%20format.pdf Virtual Hard Disk (VHD) image format], by the [[libvhdi|libvhdi project]], September 2012
  
 
=== Snapshots ===
 
=== Snapshots ===

Revision as of 14:00, 17 September 2012

Information icon.png

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Further information might be found on the discussion page.

The Virtual Hard Disk (VHD) commonly uses the .vhd extension.

This format is used to store virtual disk images by:

  • Microsoft Virtual PC
  • Microsoft Virtual Server
  • Microsoft Hyper-V Server

Image types

There are multiple types of Virtual Hard Disk (VHD) images:

  • Fixed-size hard disk image; the image contains all data
  • Dynamic-size (or sparse) hard disk image; the image contains used data only
  • Differencing (or delta) hard disk image; the image contains changes relative to its parent image

Snapshots

Hyper-V has functionality to create snapshots.

These snapshots are stored in Snapshot Differencing Disk (AVHD) files which commonly uses the .avhd extension.

The snapshot can be interdependent on one-another, because they are differential images of the previous snapshot.

See Also

External Links

Snapshots