Introduction to NonStop Operations Management

Glossary
Introduction to NonStop Operations Management–125507
Glossary-9
operations management activities.
operations management activities. Activities, as defined by the Tandem operations
management model, that support a production system, plan for all aspects of the
production system, control the introduction of change into the production system, and
operate the production system.
operations management model (OM model). A model for managing Tandem systems that
categorizes operations management functions into the following disciplines: production
management, problem management, change management, configuration management,
security management, and performance management.
operator message. The text displayed for a system operator that describes an event.
operations outage class. An outage class that includes errors caused by operations personnel
due to accidents, inexperience, or malice. See also outage class.
OSS. See Open System Services (OSS).
outage. Time during which the system is not capable of doing useful work because of a
planned or unplanned interruption. From the end-user’s perspective, an outage is any
time the application is not available. See also down time, outage class, outage log,
outage minutes, planned outage, and unplanned outage.
outage class. A concept developed by Tandem to categorize the cause of unplanned and
planned outages. There are five outage classes: physical, design, operations,
environmental, and reconfiguration. See also physical outage class, design outage class,
operations outage class, environmental outage class, and reconfiguration outage class.
outage log. A record of system outages. An outage log can provide an accurate assessment of
availability. Tandem recommends that outages be measured in minutes rather than
percentages. See also outage minutes.
outage minutes. A metric recommended by Tandem for measuring outages. Translates
percentages into minutes of down time per year. See also down time and availability.
PATHCOM. The interactive administrative interface to the NonStop Transaction
Services/MP core service. See also NonStop Transaction Services/MP.
PATHMON process. The central control process for the NonStop TS/MP transaction-
processing core service and the optional Pathway/TS software, which together form the
Pathway environment. The PATHMON process controls all processes and devices in the
Pathway environment and provides the means to configure, manage, monitor, and
change the configuration of the Pathway environment.
Pathway environment. The programs and operating environment required for developing
and running online transaction-processing (OLTP) applications. This group of tools is
packaged as two separate products: NonStop TS/MP and the optional Pathway/TS
software. See also NonStop Transaction Services/MP (NonStop TS/MP) and
Pathway/TS.