Open SCSI Integrator's Manual for NonStop S-Series Servers

Glossary
Open SCSI Integrator’s Manual for NonStop Servers—422988-002
Glossary-15
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
.
offline configuration. Configuration performed offline by SYSGENR. You edit the
CONFTEXT configuration file to create a new configuration, and then run the
Distributed Systems Management/Software Configuration Manager (DSM/SCM) (which
in turn runs SYSGENR) to generate a system image for the new configuration.
online. Used to describe tasks that can be performed while the NonStop 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
.
Online Support Center (OSC). The group of support specialists within the Global Customer
Support Center (GCSC) who respond to telephone calls regarding system problems and
diagnose malfunctioning systems using remote diagnostic links. See also Global
Customer Support Center (GCSC).
operational environment. The conditions under which your system performs. These include
the devices and communications lines that are made active and the system and
application processes that are started at system startup.
operator message. A message, intended for an operator, that describes a significant event on
a NonStop system. An operator message is the displayed-text form of an Event
Management Service (EMS) event message. See also event message
.
OSC. See Online Support Center (OSC)
.
outage. Time during which a NonStop system is not capable of doing useful work. Outages
can be planned or unplanned. From the end user’s perspective, an outage is any time an
application being used is not available. See also planned outage
and unplanned outage.
outage minutes. A metric for measuring outages that translates percentages into minutes of
downtime per year.
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.