Fast Ethernet Adapter Installation and Support Guide

Glossary
Fast Ethernet Adapter Installation and Support Guide—425685-003
Glossary-12
Class-2 CRU
Class-2 CRU. A customer-replaceable unit (CRU) that might cause a partial or total system
outage if the documented replacement procedure is not followed correctly. Customers
replacing Class-2 CRUs should have either three or more months of experience with
replacing HP NonStop™ S-series CRUs or equivalent training. Customers must be
able to use the tools needed for the replacement procedure and must protect
components from electrostatic discharge (ESD).
Class-3 CRU. A customer-replaceable unit (CRU) that probably will cause a partial or total
system outage if the documented replacement procedure is not followed correctly.
Customers replacing Class-3 CRUs should have either six or more months of
experience with replacing HP NonStop™ S-series CRUs or equivalent training.
Customers must be able to use the tools needed for the replacement procedure, must
protect components from electrostatic discharge (ESD), and must understand the
dependencies involved in NonStop S-series CRU-replacement procedures, such as
disk-path switching. Replacement by a service provider trained by HP is
recommended.
client. A software process, hardware device, or combination of the two that requests
services from a server. Often, the client is a process residing on a programmable
workstation and is the part of an application that provides the user interface. The
workstation client might also perform other portions of the application logic.
client application. An application that requests a service from a server application.
Execution of remote procedure calls is an example of a client application.
client (of a loadable library). A loadfile that uses functions or data from a library.
CLIP. See communications line interface processor (CLIP).
cluster. (1) A collection of servers, or nodes, that can function either independently or
collectively as a processing unit. See also ServerNet cluster. (2) A term used to
describe a system in a Fiber Optic Extension (FOX) ring. More specifically, a FOX
cluster is a collection of processors and I/O devices functioning as a logical group. In
FOX nomenclature, the term is synonymous with system or node.
cluster number. A number that uniquely identifies a node in a Fiber Optic Extension (FOX)
ring. This number is in the range 1 through 14. See also node number.
cluster switch. See HP NonStop™ Cluster Switch.
cluster switch enclosure. An enclosure provided by HP for housing the subcomponents of
an HP NonStop™ Cluster Switch, which include the ServerNet II Switch, the AC
transfer switch, and the uninterruptible power supply (UPS). A cluster switch enclosure
resembles, but is half the height of, a standard HP NonStop S-series system
enclosure.
CME. See correctable memory error (CME).
CMI. See Communications Management Interface (CMI).