Ethernet Adapter Installation and Support Guide

Glossary
Ethernet Adapter Installation and Support Guide—425684-003
Glossary-40
Guardian environment
Advanced Command Language (TACL) or another HP product’s command interpreter.
Contrast with Open System Services (OSS).
Guardian environment. The Guardian application program interface (API), tools, and
utilities.
Guardian services. An application program interface (API) to the HP NonStop™ Kernel
operating system, plus the tools and utilities associated with that API. This term is
synonymous with “Guardian environment.” See also Guardian.
Guardian user ID. See HP NonStop™ Kernel user ID.
GUI. See graphical user interface (GUI).
GUID. See globally unique ID (GUID).
guided procedure. A software tool that assists you in performing complex configuration or
replacement tasks on an HP NonStop™ S-series server. Guided procedures are
accessible from the Start menu on your system console. Examples include Replace
SEB or MSEB, Configure ServerNet Node, and Replace IOMF.
Guided Replacement Toolkit (GRT). A software product that guides you through online
replacement of the following customer-replaceable units (CRUs) on HP NonStop™
S-series systems: I/O multifunction (IOMF) CRUs, power supplies, processor
multifunction (PMF) CRUs, and 6760 ServerNet device adapters. GRT is used only
with older versions of TSM server software; if you are replacing a CRU in a system
running TSM server version T7945AAX (shipped with G06.13) or later, use the
appropriate guided procedure.
hard link. In the Open System Services (OSS) file system, the relationship between two
directory entries for the same file. A hard link acts as an additional pointer to a file. A
hard link cannot be used to point to a file in another fileset. Contrast with symbolic link.
hard reset. An action performed on an HP NonStop™ Cluster Switch that reinitializes the
router-2 ASIC within the switch, disrupting the routing of ServerNet messages through
the switch for several minutes. When the hard reset is finished, the paths are restored
automatically.
harmonic. The sinusoidal component of an alternating-current (AC) voltage that is a
multiple of the waveform frequency.
harmonic distortion. Harmonics that change an alternating-current (AC) waveform from
sinusoidal to complex.
header. An object that, when specified for inclusion in a program’s source code, causes the
program to behave as if the statement including the header were actually a specific set
of other programming statements. A header contains coded information that provides
details (such as data item length) about the data that the header precedes.