TCP/IP (Parallel Library) Migration Guide

Glossary
HP NonStop TCP/IP (Parallel Library) Migration Guide—522272-003
Glossary-9
scalable
scalable. The architectural capacity to grow to accommodate growing computing demands.
When an architecture is “scalable,” that means you can keep adding processing power
as your computing needs grow.
SCF. See Subsystem Control Facility (SCF).
SCP. See Subsystem Control Point (SCP).
sensitive command. A Subsystem Control Facility (SCF) command that can be issued only
by a user with super-group access, by the owner of the subsystem, or by a member of
the group of the owner of the subsystem. The owner of a subsystem is the user who
started that subsystem (or any user whose application ID is the same as the server
ID—the result of a PROGID option that requires super-group access). Compare
nonsensitive command.
ServerNet adapter. A component that connects peripheral devices to the remainder of the
system through a ServerNet bus interface (SBI). A ServerNet adapter is similar in
function to an I/O controller logic board (LB) and backplane interconnect card (BIC) in
NonStop K-series servers.
ServerNet addressable controller (SAC). An I/O controller that is uniquely addressable by
a ServerNet ID in the ServerNet fabrics. A SAC typically is implemented on some
portion of a processor multifunction (PMF) customer-replaceable unit (CRU), an I/O
multifunction (IOMF) CRU, or a ServerNet adapter.
ServerNet LAN Systems Access (SLSA) subsystem. A subsystem of the NonStop
operating system. The SLSA subsystem enables the protocol I/O processes and
drivers to access the ServerNet adapters.
ServerNet wide area network (SWAN) concentrator. An HP data communications
peripheral that provides connectivity to a NonStop S-series server. The SWAN
concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces.
service. A set of primitives (operations) that a layer provides to the layer above it. The
service defines what operations the layer can perform on behalf of its users, but not
how these operations are implemented. A service relates to an interface between two
layers: the lower layer is the service provider, and the upper layer is the service user.
Compare protocol.
session. For a management application, the period during which an application can issue
commands to a subsystem.
Simple Mail Transfer Protocol (SMTP). The Internet standard protocol for transferring
electronic mail messages from one machine to another. SMTP specifies how two mail
systems interact, and specifies the format of control messages the two mail systems
exchange to transfer mail.
SLSA Subsystem. See ServerNet LAN Systems Access (SLSA) subsystem.