Availability Guide for Change Management

Glossary
Availability Guide for Change Management–125506
Glossary-9
phantom device
phantom device. A device that is configured but that is not physically present. You can make
a phantom device operational without having to bring your NonStop system down.
Configuring phantom devices is one way you can plan for future growth.
physical outage class. An outage class that includes physical faults or failure in the
hardware. Any type of hardware component failure belongs in this category.
planned outage. Time during which the system is not capable of doing useful work because
of a planned interruption. A planned outage can be time when the system is brought
down to allow for servicing, upgrades, backup, or general maintenance.
planned outage request form. A form that is used to gather information about change. A
planned outage request form helps set expectations and enables managers to understand
the reasons for planned outages. A planned outage request form also provides historical
data that can be used for trend analysis, which in turn can be used to determine where
improvement opportunities exist.
POET. See Pathway Open Environment Toolkit (POET).
problem management. Activities that provide support for resolving problems in a
production environment. One of the operations disciplines in the operations-
management model.
process. A unique execution of a program.
production management. The set of regularly scheduled activities that keeps the
applications on a system or network of systems running smoothly. These activities
include administering storage media such as disks and tapes, managing space in
processors and disks, and starting or stopping system components. One of the
operations disciplines in the operations-management model.
programmatic SQL. The set of SQL statements that can be embedded in a host language
program; the application programming interface for NonStop SQL/MP.
reconfiguration outage class. An outage class that includes all planned outages. Examples
include downtime required for planned maintenance (such as software upgrades) and
configuration changes (such as adding a new disk or restructuring a database).
relational database. A database in which data is represented as relational tables.
release. The means by which Tandem provides new versions of software products. Refers to
a set of software containing one version of each software product. A software release is
distributed on a site update tape (SUT) and is identified by a release ID; for example,
D30.02. The release ID is often different from the base versions of the specific products
issued under that release.
Remote Server Call (RSC). A Tandem product that facilitates client/server computing,
allowing personal computer (PC), Macintosh, or workstation applications to access
Pathway servers. Transactions are transmitted from the PC, Macintosh, or workstation