2 IBM VM/370 Planning and System Generation Guide
available to many users at the same
the functional equivalent of a real, dedicated computing system.
Because this functional equivalent is simulated by
really exist, it is called a "virtual" machine.
The processors that
"Processors" later in
Address Translation feature, a hardware facility that translates
storage addresses to real storage addresses, and the
which all the features of a
translation, are operational.
heading
Dynamic
virtual
Timing
mode in
address
computer to provide multiple virtual machines.
of conversational and time-sharing facilities.
create and manage files, and compile, test, and execute problem
programs.
spool files between
telecommunication lines.
creation, problem tracking, and
For an overview of the functions performed by
the virtual machines, it
managing the work flow
virtual machine executes
one may use a different
same operating system.
of
is also necessary to have an operating system
within each virtual machine. Because each
independently of other virtual machines, each
operating system, or different releases of