NonStop S-Series Server Description Manual (G06.24+)

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-8
block
block. A grouping of one or more system enclosures that an HP NonStop™ S-series
system recognizes and supports as one unit. A block can consist of either one
processor enclosure, one I/O enclosure, or one processor enclosure with one or more
I/O enclosures attached.
blocked signal. A programmatic signal that is currently in the pending signal mask of a
process and, when generated, is not delivered to the process because of the signal
mask setting. Some signals cannot be blocked.
block special file. In the Open System Services (OSS) environment, a device that is
treated as a file for which all input or output must occur in blocks of data. Traditionally,
such files are disk or tape devices. Block special files provide access to a device in a
manner that hides the hardware characteristics of the device. Contrast with character
special file.
bond. A reliable connection that ensures the required electrical conductivity between
conductive parts that must be electrically connected.
bonded. The mechanical interconnection of conductive parts to maintain a common
electrical potential.
bonding. The permanent joining of conductive parts to form a path that ensures electrical
continuity and the capacity to safely conduct any current likely to be imposed.
bonding jumper. See main bonding jumper.
boot. A synonym for load. Load is the preferred term used in this and other HP NonStop™
S-series system publications.
BOOTP. A protocol for providing initialization information to diskless nodes in an open
network.
BOOTPC. See BOOTP client (BOOTPC).
BOOTP client (BOOTPC). A client provided as a Portable Silicon Operating System
(pSOS) system product task in the essential firmware on each communications line
interface processor (CLIP) in the ServerNet wide area network (SWAN) concentrator.
BOOTPC tasks are also provided on the host system as the WANBoot process in the
WAN subsystem.
BOOTPD. See BOOTP daemon (BOOTPD).
BOOTP daemon (BOOTPD). The BOOTP server. One BOOTPD runs as a Portable Silicon
Operating System (pSOS) system product task in the essential firmware on each
communications line interface processor (CLIP) in the ServerNet wide area network
(SWAN) concentrator. BOOTPD tasks are also provided on the host system as the
WANBoot process in the WAN subsystem.