NonStop S-Series System Expansion and Reduction Guide

Glossary
G-Series Common Glossary
Glossary-74
persistence manager process
persistence manager process. The $ZPM process that is started and managed by the
$ZCNF configuration utility process and that starts generic processes in G-series
release version updates (RVUs) and manages their persistence.
persistent configuration. A configuration that remains the same from one system load to
another.
persistent process. A process that must always be either waiting, ready, or executing.
Persistent processes are usually controlled by a monitor process that checks on the
status of persistent processes and restarts them if necessary.
phase-loss detector/contactor (PDC). Equipment used to detect the interruption (for 50
milliseconds or longer) or the complete loss of one or more phases of power to
computer equipment. Upon detection of a phase dropout, the contactor shuts down all
input phases to the system equipment, thereby allowing smooth system shutdown and
recovery.
physical interface (PIF). The hardware components that connect a system node to a
network.
physical link interfaces. Communications standards defined by standards organizations.
The following physical link interfaces are supported for the ServerNet wide area
network (SWAN) concentrator: RS-232, RS-442, RS-449, V.35, and X.21.
Physical view. One of several views of a server available in the view pane of the
Management window of the OSM Service Connection, TSM Service Application, and
OSM and TSM Low-Level Link. A Physical view of a server is a view of all the
enclosures and is intended to represent the actual floor plan at the site. A Physical
view of an enclosure is a visual representation of the physical placement of supported
resources inside the enclosure. See also Connection view
.
PIB. See power interface board (PIB).
PIC. See plug-in card (PIC).
PID. In the Open System Services (OSS) environment, a synonym for process ID. OSS
process ID is the preferred term in HP NonStop™ S-series system publications.
In the Guardian environment, PID is sometimes used to mean either:
•
A Guardian process identifier such as the process ID
•
The cpu, pin value that is unique to a process within a node (See HP NonStop™
Kernel user ID.)
PIF. See physical interface (PIF).
PIN. See process identification number (PIN).