The partitioning of a physical
server into smaller
virtual servers. In server virtualization the resources of the server itself are
hidden, or masked, from users, and
software is used
to divide the
physical server into multiple virtual
environments, called virtual or private servers. One common usage of this
technology is in Web servers.
Virtual Web servers
are a very popular way of providing low-cost web hosting services. Instead of
requiring a separate computer for each server, dozens of virtual servers can
co-reside on the same computer. There are several ways to create a virtual
server, with the most common being;
virtual machine,
operating
system-level virtualization, and paravirtual machine.
