NonStop NS-Series Servers Site Preparation (H06.03+)

Glossary
HP Integrity NonStop NS-Series Site Preparation Guide—527836-005
Glossary-5
IEEE
IEEE. Institute of Electrical and Electronics Engineers. IEEE is a professional organization
whose committees develop and propose computer standards that define the physical
and data link protocols of entities such as communication networks.
IEEE 802.3 protocol. Institute of Electrical and Electronics Engineers (IEEE) standard
defining the hardware layer and transport layer of (a variant of) Ethernet. The
maximum segment length is 500 meters, and the maximum total length is 2.5
kilometers. The maximum number of hosts is 1024. The maximum packet size is 1518
bytes.
inrush current. The initial surge current demand of a load.
installer. The person who installs the system equipment for a new system. This person also
installs new equipment when additions are made to the system. This person can install
software and perform system verification procedures as directed by the system
planner, configuration planner, or support planner.
insulated ground. A grounding conductor with a dielectric (low-conductance) insulator
around it to prevent inadvertent contact with metal conduits.
I/O adapter module (IOAM). A collection of modular components that provides I/O
connectivity and can include ServerNet switch boards, Fibre Channel ServerNet
adapters (FCSAs), fans, and power supplies. In the IOAM, each module is a logical
entity that represents a single service domain.
I/O adapter module enclosure (IOAM enclosure). The sheet-metal carrier that is installed
in a 19-inch rack and contains the IOAM components.
IOAM. See I/O adapter module (IOAM).
IOAM enclosure. See I/O adapter module enclosure (IOAM enclosure).
I/O cabinet. See I/O enclosure.
I/O controller. The hardware logic that controls computer I/O operations for a particular set
of devices, such as disks, tapes, terminals, or communications lines.
I/O enclosure. An HP NonStop™ S-series system enclosure containing one module, which
includes ServerNet adapters, disk drives, components related to the ServerNet fabrics,
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.
LAN. See local area network (LAN).
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.