Gigabit Ethernet ServerNet Adapter Installation and Support Guide

Glossary
Gigabit Ethernet Adapter Installation and Support Guide—523628.005
Glossary-9
subsystem
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 Subsystem Control Facility (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 NonStop S-series subsystems.
Subsystem Control Point (SCP). The management process for all Subsystem Control
Facility (SCF) subsystems. There can be several instances of this process. Using the
Subsystem Programmatic Interface, applications send each command for a subsystem
to an instance of this 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 NonStop process pairs.
subsystem manager. A Subsystem Control Facility (SCF) process that performs
configuration and management functions for an SCF subsystem.
SWAN concentrator. See ServerNet wide area network (SWAN) concentrator.
SWAN 2 concentrator. See ServerNet wide area network (SWAN 2) concentrator.
system area network (SAN). A high-speed network, within a system, that connects
processors to each other and to peripheral controllers. A SAN has the performance of
a massively parallel interconnect, but has distribution capabilities similar to a local area
network (LAN). NonStop S-series servers support the ServerNet system area network
(ServerNet SAN).
TSM package. See Compaq TSM package.
Wide Area Network (WAN). A network that operates over a larger geographical area than
that was provided by a local area network (LAN). The elements of a WAN may be
separated by distances great enough to require telephone communications. See also
local area network (LAN).
$ZZLAN. The name of the ServerNet LAN Systems Access (SLSA) subsystem manager
process that is started by the $ZZKRN Kernel subsystem manager process and
maintained by the $ZPM persistence manager process. See also LAN Manager
(LANMAN) process.