ATM Configuration and Management Manual

Glossary
ATM Configuration and Management Manual—522307-003
Glossary-21
SRL
SRL. See shared run-time library (SRL).
SSCOP. See service specific connection oriented protocols (SSCOP).
state. In SCF, one of the generally defined possible conditions of an object with respect to
the management of that object. Examples of states are DEFINED, STARTED, and
STOPPED.
storage pool. A set of physical disk volumes administered as a set of logical disk volumes.
A logical disk volume can span multiple physical disk volumes. When a logical disk
volume becomes full, more physical disk volumes can be added.
STS-n. See Synchronous Transfer Signal (STS-n).
subnet. See subnetwork
subnetwork. A physical network within an Internet protocol (IP) network. Each IP network
can be divided into a number of subnetworks. Within a given network, each
subnetwork is treated as a separate network. Outside the network, the subnetworks
appear as part of a single network. The terms subnetwork and subnet are used
interchangeably.
subordinate objects. In SCF, objects that are logically subordinate to other objects. Some
subsystems are structured hierarchically, with objects of one type logically subordinate
to (that is, controlled by) an object of another type. For example, a number of
subdevices can be configured on a single line. Some SCF commands include a SUB
option that refers to subordinate objects.
substate. Further information about the state of a device. The state and substate together
provide information about the current condition of a device or path to a device.
subsystem. (1) A secondary or subordinate system, usually capable of operating
independently of or asynchronously with a controlling system. (2) A program or set of
processes that manages a cohesive set of SCF objects. Each subsystem has a
manager through which applications can request services by issuing commands
defined by that subsystem. See also subsystem manager.
Subsystem Control Facility (SCF). An interactive interface for configuring, controlling, and
collecting information from a subsystem and its objects. SCF enables you to configure
and reconfigure devices, processes, and some system variables while your Nonstop S-
series server is online.
Subsystem Control Point (SCP). The message router for SCF. There can be several
instances of this process. Using an SPI, applications send each command for a
subsystem to an instance of the SCP process, which in turn sends the command to the
manager process of the target subsystem. SCP also processes a few commands itself.
It provides security features, version compatibility, support for tracing, and support for
applications implemented as process pairs.