NonStop S-Series Hardware Installation and FastPath Guide (G06.26+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529876-001
Glossary-59
light-emitting diode (LED)
light-emitting diode (LED). A semiconductor device that emits light from its surface.
Indicator lights are composed of LEDs. See also indicator lights.
line. The specific hardware path over which data is transmitted or received. A line can also
have a process name associated with it that identifies an input/output process (IOP) or
logical device associated with that specific hardware path.
linear load. Electrical loads for which the impedance is constant regardless of the voltage,
so that if the voltage is sinusoidal, the current drawn is also sinusoidal.
line-handler process. See Expand line-handler process or Expand-over-ServerNet
line-handler process.
line interface unit (LIU). A dual-ported unit consisting of two parts: a communications line
interface processor (CLIP) and a line interface module (LIM). An LIU can communicate
with either the primary or the backup processor, providing fault tolerance. When it is a
component of the communications subsystem, an LIU communicates with either
processor through either of a pair of communications interface units (CIUs).
link. In the Open System Services (OSS) file system, a directory entry for a file.
link count. In the Open System Services (OSS) file system, the number of directory entries
that refer to a particular file.
linker. (1) The process or server that invokes the message system to deliver a message to
some other process or server. (2) A programming utility, which combines one or more
compilation units’ linkfiles to create an executable loadfile for a native program or
library.
linkfile. (1) For native C/C++ compilers in the Guardian environment, a command file for
input to the ld or nld utility. (2) A file containing object code that is not yet ready to
load and execute. Linkfiles are combined by means of a linker to make an executable
loadfile for a program or library. Compiling creates one linkfile per independent source
module. Contrast with loadfile
.
linking. The operation of collecting, connecting, and relocating code and data blocks from
one or more separately compiled object files to produce a target object file.
link name. In the Open System Services (OSS) environment, the filename
associated with
a specific file within a directory. The length of a filename, and therefore the length of a
link name, depends on the file system.
Linux. Linus Torvald’s version of the UNIX operating system. See also
http://www.linux.org.
listener. The process or server that is notified by the message system that a message from
some other process or server is being delivered.
LIU. See line interface unit (LIU).