NonStop S-Series Planning and Configuration Guide (G06.26+)

Glossary
HP NonStop S-Series Planning and Configuration Guide—523303-017
Glossary-111
switch logic board
switch logic board. See cluster switch logic board.
switch mode power supply. A computer power supply that uses a pulse-width modulation
switching inverter and nonlinear current draw characteristics. Switch-mode power
supplies are widely used because of their small size and efficiency.
switch rack. See cluster switch rack.
switch zone. See cluster switch zone.
switched connect. Connection to the Enterprise Storage System (ESS) through a Fibre
Channel switch (FC switch).
symbol. (1) The symbolic name of a value, typically a function entry point or a data location.
In the context of loadable libraries, symbols are defined in loadfiles and referenced in
the same or other loadfiles. (2) Within the ServerNet architecture, the nine or more bits
that encode 8-bit data and protocol commands.
symbolic link. In the Open System Services (OSS) file system and Network File System
(NFS), a type of special file that acts as a name pointer to another file. A symbolic link
contains a pathname and can be used to point to a file in another fileset. Symbolic links
are not included in ISO/IEC IS 9945-1:1990. Contrast with hard link
.
symbolic reference. An occurrence in code or data of the value of a symbol. The symbolic
reference is bound (resolved and made usable) by assigning to it the value of a
definition of that symbol. The symbol value is normally the address of a function or
variable named by the symbol. In position-independent code (PIC) loadfiles, symbolic
references occur only in data.
symbols region. See Inspect region.
SYSGENR. The system generation program that generates a customized version of the HP
NonStop™ operating system for G-series release version updates (RVUs).
SYSnn subvolume. A subvolume on the $SYSTEM volume where the new version of the
HP NonStop™ operating system image is located. Also located on the SYS
nn
subvolume is system-dependent and release version update (RVU)-dependent
software.
nn is an octal number in the range %00 through %77.
SYSPOOL. The system data space that remains in memory after all system data structures
are built by the HP NonStop™ operating system at the time of a processor load.
system. All the processors, controllers, firmware, peripheral devices, software, and related
components that are directly connected together to form an entity that is managed by
one HP NonStop™ operating system image and operated as one computer. See also
node
.
system area network management process. See external system area network manager
process (SANMAN).