Dictionary · Certification Terminology
Virtualization
Cloud and virtualization · Beginner
Running one or more virtual computers on physical hardware so each guest has its own operating system and resources. A hypervisor provides that separation.
One physical server can host many guests. Snapshots and easier moves are the benefits. Noisy neighbors and a failed host are the risks, because the guests share the machine.
Example: A single host runs separate guests for a web server and a directory server, each with its own address.
Common misconception
- A virtual machine is not a container. It includes a full guest operating system.