• storage virtualization: the amalgamation of multiple network storage devices into what appears to be a single storage unit.
• server virtualization: the partitioning a physical server into smaller virtual servers.
• operating system-level virtualization: a type of server virtualization technology which works at the operating system (kernel) layer.
• network virtualization: using network resources through a logical segmentation of a single physical network.
• application virtualization

See also virtual.
Contrast with physical.
Compare virtualization with emulation.

Cisco Official Site - Virtualization - Adapt To Your Changing Business Demands With A Cisco Unified Computing System.

esXpress - VMware Backup and Recovery Solution - Discover a reliable VMware Data Recover Application. Trusted by thousands of enterprises worldwide. Download your free 30-day trial today!

Autodesk Inventor: Revolutionizing Digital Prototyping - Get To Market Faster with Software That Enables You To Create, Test, and Iterate Your Models in 3D.

An Introduction to Virtualization
The purpose of this document can be informally stated as follows: if you were to use virtualization in a an endeavor (research or otherwise), here are some things to look at.

EnterpriseNetworkingPlanet
EnterpriseNetworkingPlanet provides practical advice and news for running and managing an enterprise network. In-depth articles and news cover topics such as network management, network monitoring, servers, communications, Internet telephony, operating systems, and much more.

Open Networks Today
Networking news moves at a fast pace, and Open Networks Today lets you keep up with it. Open Networks Today offers its readers the ability to control how news is presented through customizing content filters, discussions, and news feed links.

Swainson: Virtualization Everywhere in 5 Years
The computing resources that make the bedrock of IT will be virtualized over the next five years to alleviate the tangled Web of complexity in data centers.

Webopedia's "Did You Know...?" Section
Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software.