Gigabit Ethernet ServerNet Adapter Installation and Support Guide

Glossary
Gigabit Ethernet Adapter Installation and Support Guide—523628.005
Glossary-2
controller
controller. See ServerNet addressable controller (SAC).
CRU. See customer-replaceable unit (CRU).
customer-replaceable unit (CRU). A unit that can be replaced in the field either by
customers or by qualified personnel trained by HP. CRUs are divided into the
categories of Class 1, Class 2, and Class 3 according to the risk of causing a
connectivity problem if the documented replacement procedure is not followed
correctly and how much CRU-replacement training or experience is advisable. The
Gigabit Ethernet ServerNet adapter (GESA) is a Class 2 CRU. See also field-
replaceable unit (FRU).
download. (The process of loading software into a device.
E4SA. See Ethernet 4 ServerNet adapter (E4SA).
enclosure. Similar to a cabinet in NonStop K-series systems. An enclosure can contain
components of a system or a peripheral, such as a card cage, a backplane, a disk
drive, or a fan. Base enclosures are placed on the floor and can have other enclosures
stacked on top of them. Stackable enclosures can be place on top of other enclosures.
error. A condition encountered when performing a command or other operation that causes
the command or operation to fail.
Ethernet. A local area network (LAN) that uses the carrier sense multiple access with
collision detection (CSMA/CD) access method on a bus topology and is the basis for
the IEEE 802.3 standard. The Ethernet data transfer rate is typically
10 Megabits/second (Mbps).
Ethernet 4 ServerNet adapter (E4SA). A ServerNet adapter for Ethernet local area
networks (LANs) that contains four Ethernet ports.
event message. Text intended for a system operator that describes a change in some
condition in the system or network, whether minor or serious. The change of condition
is called an event. Events can be operational errors, notifications of limits exceeded,
requests for actions needed, and so on. See also operator message.
fabric. A complex set of interconnections through which there can be multiple and (to the
user) unknown paths from point to point. The term “fabric” is used to refer to the X or Y
portion of the ServerNet system area network (ServerNet SAN); for example, the X
fabric.
Fast Ethernet ServerNet adapter (FESA). A single-ported ServerNet adapter that supports
100-megabit/second (Mbps) and 10-Mbps Ethernet data transfer rates on an HP
NonStop S-series server. The 3863 FESA installs directly into an existing Ethernet
port, and one FESA is supported in each system enclosure.
fault tolerance. The ability of an HP NonStop system to continue processing despite the
failure of any single software or hardware component within the system.