6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-25
dual-ported
connect to the same memory chip. This difference gives the DIMM a wider data path,
as more modules can be accessed at once.
dual-ported. The capability of a ServerNet adapter or peripheral device to receive data and
commands from two sources although only one source might have access at any
particular moment.
duplicate file descriptor. In the Open System Services (OSS) file system, a file descriptor
that refers to the same open file description as another file descriptor.
dynamic configuration file (DCF). An attachment file that is produced by the Compaq
TSM client software and accompanied by an incident report. The DCF contains a
snapshot of the system configuration, the state of the HP NonStop™ S-series server,
and outstanding alarms at the time that the incident report was issued. The DCF is
used by the service provider to avoid having to perform online discovery of the server
over dial-up telephone lines.
dynamic information. Information that represents the set of resources that actually exist in
the current configuration of an HP NonStop™ S-series server. Dynamic information is
gathered from a server through the process of discovery. Contrast with static
information.
dynamic process configuration. Using Subsystem Control Facility (SCF) to configure a
generic process to always start in a designated primary processor (that is, to be
fault-tolerant).
Dynamic System Configuration (DSC). A utility used in D-series and earlier release
version updates (RVUs) to make online changes to the configuration of devices and
controllers. Its interactive utility is called the Configuration Utility Program (COUP). In
G-series RVUs, similar functions are performed by Subsystem Control Facility (SCF).
E4SA. See Ethernet 4 ServerNet adapter (E4SA).
earth ground. The connection of the electrical-grounding conductors to a dependable, low-
resistance contact with the soil.
earth-grounding electrode. An electrically conductive rod that is driven into soil, thus
providing an earth-ground connection point for the electrical ground wiring in a building.
A vertical steel column of a building, with its base sunk into soil, can also serve as an
earth-grounding electrode.
earth-grounding electrode system. A grounding network created by bonding together the
grounding means in a building (for example, underground metal water pipes, structural
steel, and ground rods into the earth) and bonding them to the switchgear at the
facility’s main electrical service entrance.
ECL. See emitter-coupled logic (ECL).
ECL plug-in card (PIC). See emitter-coupled logic (ECL) plug-in card (PIC).