virtual hard disk (VHD)

Virtual hard disk (VHD) is a disk image file format for storing the complete contents of a hard drive. (Continued)

What is virtual hard disk?

Virtual hard disk (VHD) is a disk image file format for storing the complete contents of a hard drive. The disk image, sometimes called a virtual machine, replicates an existing hard drive and includes all data and structural elements. It can be stored anywhere the physical host can access.

There are two main types of virtual hard disks: fixed-size and dynamically expanding. Both types have a maximum size value that specifies how large the disk will appear to virtual machines. However, fixed-size VHDs will automatically take up the specified amount of physical disk space on the host computer's file system, whereas dynamically expanding disks will allocate space only as needed.

Learn More About IT:
> Anil Desai explains more about VHD options.
> Wikipedia has an entry for virtual hard disk.

This was first published in July 2009

Glossary

'virtual hard disk (VHD)' is part of the:

View All Definitions

Dig deeper on Virtual desktop infrastructure and architecture

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

2 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

File Extensions and File Formats

Powered by:

SearchEnterpriseDesktop

SearchServerVirtualization

SearchCloudComputing

SearchConsumerization

SearchVMware

Close