ServerNet/FX Adapter Configuration and Management Manual

Glossary
ServerNet/FX Adapter Configuration and Management Manual—426872-002
Glossary-5
input source
input source. The resource from which Subsystem Control Facility (SCF) accepts
command input. SCF can accept input from a terminal or a disk file. The initial input
source is determined by the form of the RUN command used to initiate SCF. At any
time during an SCF session, the input source can be temporarily changed to execute a
series of commands from a command file.
I/O enclosure. A NonStop S-series system enclosure containing exactly one module, which
includes ServerNet adapters, disk drives, components related to the ServerNet system
area network (ServerNet SAN), and components related to electrical power and
cooling for the enclosure. An I/O enclosure is identical to a processor enclosure,
except that it contains I/O multifunction (IOMF) customer-replaceable units (CRUs)
instead of processor multifunction (PMF) CRUs.
Kernel subsystem. In G-series releases, the subsystem for configuration and management
of the Subsystem Control Facility (SCF) subsystem managers that are generic
processes, some system attributes, and the ServerNet X and Y fabrics.
Kernel subsystem manager process. The generic process that starts and manages other
generic processes, some system attributes, and the ServerNet X and Y fabrics in
G-series releases. The $ZZKRN Kernel subsystem manager process is started and
managed by the $ZPM persistence manager process.
LBU. The logical interface to a ServerNet/FX adapter. There are two LBUs: $ZZFOX.#X and
$ZZFOX.#Y.
LED. See light-emitting diode (LED).
light-emitting diode (LED). A semiconductor device that emits light from its surface.
Indicator lights are composed of LEDs.
management process. A process through which an application issues commands to a
subsystem. A management process can be part of a subsystem or it can be associated
with more than one subsystem; in the latter case, the management process is logically
part of each subsystem. Subsystem Control Point (SCP) is the management process
for all subsystems controlled by Subsystem Control Facility (SCF).
microcode. Any machine code or data that can run in a microprocessor. HP produces two
types of microcode: volatile and nonvolatile. Volatile microcode is loaded into the
volatile random-access memory (RAM) of some types of printed wiring assemblies
(PWAs) and is not retained in a host PWA when power to the PWA is interrupted. For
nonvolatile microcode, see firmware.
module. A set of components sharing a common interconnection, such as a backplane. A
module is a subset of a group, and it is usually contained in an enclosure. In a NonStop
S-series server, there is exactly one module in a group.
NAM. See network access method.
neighbor systems. See Expand neighbors.