NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-86
quad-integrated communications controller (QUICC)
quad-integrated communications controller (QUICC). The Motorola MC68360 chip. For
HP NonStop™ S-series servers, the QUICC is used as the service processor (SP) and
is the main part of the ServerNet wide area network (SWAN) concentrator
communications line interface processor (CLIP).
quality power. The attributes and configuration of the power-distribution systems installed
within a facility that best serve the power needs of that facility’s electrical equipment
(for example, computer systems, air conditioning, and so on), providing the minimum
possible disruption to equipment operation.
QUICC. See quad-integrated communications controller (QUICC).
R1. See ServerNet router 1.
R2. See ServerNet router 2.
raceway. An enclosed channel used to hold wires, cables, or busbars. Most raceways have
removable tops to facilitate the installation or removal of their contents.
rack. A metal structure that has four columns, to which slides or rails that hold computer
equipment can be fastened. See also frame.
radio frequency interference (RFI). Forms of conducted or radiated interference that might
appear in a facility as either normal or common-mode signals. The frequency of the
interference can range from the kilohertz to gigahertz range. However, the most
troublesome interference signals are usually found in the kilohertz to low megahertz
range. At present, the terms radio frequency interference and electromagnetic
interference (EMI) are usually used interchangeably.
RDMA. Remote direct memory access.
read-only file system. A file system with implementation-defined characteristics that restrict
changes to the files within that file system.
read/write head. An electromagnet that can pick up (read) electronic pulses and record
(write) electronic pulses on a magnetic disk or tape. The electronic pulses are
interpreted by the processor as binary data. See also disk drive and tape drive.
real group ID. An attribute of an Open System Services (OSS) process. When an OSS
process is created, the real group ID identifies the group of the user or parent process
that created the process. The real group ID can be changed after process creation.
real user ID. An attribute of an Open System Services (OSS) process. When an OSS
process is created, the real user ID identifies the user or parent process that created
the process. The real user ID can be changed after process creation.
$RECEIVE. The name of a file through which a process receives and optionally replies to
messages from other processes.