NonStop S-Series Server Description Manual (G06.24+)
Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-97
socket
socket. An end-point for stream-oriented communication. A socket has a file descriptor.
soft reset. An action performed on an HP NonStop™ Cluster Switch that restarts the 
firmware on the cluster switch but does not interfere with ServerNet passthrough data 
traffic.
software configuration incident report. A type of incident report that reports changes in 
the software configuration of the server. A software configuration incident report 
includes the server’s software configuration file. 
software product revision (SPR). The method of releasing incremental software updates 
on HP NonStop™ S-series systems. An SPR can include one or more corrections to 
code or it can contain code that adds new function to a software product.
source ServerNet ID (SID). A field in the ServerNet packet header indicating the source of 
the packet.
SP. See service processor (SP).
special character. A character entered from a terminal that has an effect other than being 
part of the input stream from that terminal.
special file. A file in the Open System Services (OSS) file system that is not a regular file.  
Special files include directories, FIFOs, and character special files such as terminal 
device files. Contrast with regular file.
SP event message. See service processor (SP).
SPI. See Subsystem Programmatic Interface (SPI).
S-PIC. See SCSI plug-in card (S-PIC).
split-star topology. A network topology that uses up to two HP NonStop™ Cluster 
Switches for each external fabric. External routing is implemented between the two 
starred halves of a ServerNet cluster. (A starred half consists of up to eight nodes 
attached to one set of cluster switches.) The starred segments are joined by four-lane 
links. Introduced with the G06.12 release version update (RVU) of the HP NonStop 
ServerNet Cluster product, the split-star topology supports up to 16 nodes. See also tri-
star topology.
spooler. The collection of files and processes that manages the printers and print jobs on 
the system.
SPR. See software product revision (SPR).
SP Tool Application. A PC-based software application that you can use to request 
information from the master service processors (MSPs) in an HP NonStop™ S-series 
server. This application is intended for use only by trained service providers.










