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

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-7
averaging
averaging. A measurement method for determining the average value of alternating voltage
and current waveforms. The averaging method involves sampling a waveform and
averaging the samples over the period of one cycle.
AWAN. See asynchronous wide area network (AWAN) servers.
AXCEL. The command used to invoke the Accelerator on a TNS/R system.
back-end board (BEB). On some tape drives or disk drive modules, a circuit board that
translates fiber-optic signals from a 6760 ServerNet device adapter into small
computer system interface (SCSI) commands and information.
background process. In the Open System Services (OSS) environment, a process that
belongs to a background process group.
background process group. In the Open System Services (OSS) environment, a process
group that is both:
•
Not a foreground process group
•
A member of a session that has a connection with a controlling terminal
backout. The Distributed Systems Management/Software Configuration Manager
(DSM/SCM) action of making the last configuration applied to the target system
inaccessible and replacing it with the previous configuration.
backplane. A board that has connectors, on one or both sides of the board, into which
circuit board assemblies plug. Backplanes are located behind card cages or disk
cages.
BACKUP. A utility for the HP NonStop™ servers that creates a backup copy of one or more
disk files on magnetic tape. See also RESTORE.
backup processor. A processor running the HP NonStop™ operating system that
communicates with the primary processor
, allowing the processors to remain
independent. A component failure in one processor has no effect on any other
processor.
base computing platform. The minimum software implementation that is the foundation for
the X/Open common applications environment (CAE)
.
base enclosure. An enclosure that is placed on the floor and can have other enclosures
stacked on top of it. A base enclosure is installed on a frame base. Contrast with
stackable enclosure.
base profile. In an X/Open compliant system, a minimum set of software components
required to create a common applications environment.
battery load. The electrical current drain imposed on a battery.
BEB. See back-end board (BEB).