NonStop System Glossary

service processor (SP)
A physical component of the processor multifunction (PMF) customer-replaceable unit (CRU) or I/O
multifunction (IOMF) CRU that controls environmental and maintenance functions (including system
load functions) in the enclosure. SPs operate in pairs to provide fault tolerance. The two SPs in
group 01 of a NonStop S-series server are designated the master service processors (MSPs). Other
pairs of SPs within a system are called expansion service processors (ESPs). See also expansion
service processor (ESP) and master service processor (MSP).
service provider
1. A person trained and qualified to service field-replaceable units (FRUs).
2. An organization, such as the Global Mission Critical Solution Center (GMCSC), that helps you
resolve problems with your NonStop server. OSM and TSM allow you to use the help of a service
provider by configuring client software to support remote notification and remote access.
service side
The rear side of a NonStop S-series system enclosure. It contains processor multifunction (PMF)
customer-replaceable units (CRUs) or I/O multifunction (IOMF) CRUs, ServerNet expansion boards
(SEBs) or modular SEBs (MSEBs), and ServerNet adapters. The service side is opposite the
appearance side. All cables are accessed from the service side. Most service actions are performed
from the service side. Service side doors are supplied with later NonStop S-series servers but are
optional on earlier servers. Service-side doors are cosmetic and are not required for system cooling.
session
In the Open System Services (OSS) environment, a set of process groups associated for job control
purposes. A session can have a controlling terminal.
session leader
In the Open System Services (OSS) environment, the process that created a session.
session lifetime
In the Open System Services (OSS) environment, the period that begins when a session is created
and ends when the lifetime of the last remaining process group of the session ends.
setup configuration
A simple stand-alone network used to configure the OSM or TSM environment. The setup
configuration for a NonStop S-series server consists of the server, the primary system console, an
Ethernet hub, and two local area network (LAN) cables. One cable connects the primary system
console to the hub, and another cable connects the hub to a processor multifunction (PMF)
customer-replaceable unit (CRU) in group 01 of the server. When OSM or TSM configuration is
complete, the setup configuration can serve as the working network configuration. Variations of
the setup configuration can be constructed using additional cables and hubs to increase fault
tolerance.
set-user-ID program
In the Open System Services (OSS) environment, a program file that has the S_ISUID bit set in
its file mode.
shadow
The processor used to check the results of the master processor on a processor board.
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