SCF Reference Manual for J-Series and H-Series RVUs

Glossary
SCF Reference Manual for J-Series and H-Series RVUs—529649-003
Glossary-8
offline
offline. (1) Used to describe tasks that are performed outside of the control of an application
or computer system. (2) Used to describe tasks that require system resources to be
shut down. Contrast with online.
offline change. Any change that requires system resources to be shut down. Offline
changes are usually performed during a planned outage. Contrast with online change.
online. Used to describe tasks that can be performed while the HP NonStop Kernel
operating system and system utilities are operational. Contrast with offline.
online change. Any change that can be performed while an application or its system
resources are operational. In some situations, online changes might temporarily affect
subsystem and application availability. For example, altering the characteristics of a
communications line might temporarily affect applications that use the communications
line. Contrast with offline change.
OSCONFIG file. In G-series RVUs, a configuration file built during system configuration that
contains only Software Problem Isolation and Fix Facility (SPIFF) and Software
Identification (SWID) tool records.
OSIMAGE. A file built by the SYSGENR program and Subsystem Control Facility (SCF) that
contains the complete image of the HP NonStop Kernel operating system that runs in
each processor in the system.
OSM. See HP NonStop™ Open System Management (OSM) Interface.
output destination. The resource to which Subsystem Control Facility (SCF) sends its
responses to commands. SCF can direct output to a disk file, an application process, a
terminal, or a printer. The initial output destination is determined by the form of the
RUN command used to initiate SCF. The output destination can be changed
dynamically during an SCF session.
PARAM. A TACL command and a Subsystem Control Facility (SCF) command you can use
to create a parameter and give it a value. The TACL process stores the values of
parameters assigned by the PARAM command and sends the values to applications
that request parameter values.
persistence. For the Subsystem Control Facility (SCF), the capability of a generic process
to restart automatically if it was stopped abnormally. You configure this capability by
specifying a nonzero AUTORESTART value in an ADD command.
persistence manager process. The $ZPM process that is started and managed by the
$ZCNF configuration utility process and that starts generic processes in H-series RVUs
and manages their persistence.
persistent configuration. A configuration that remains the same from one system load to
another.