NonStop System Glossary

information for all system objects that can be configured during system generation is contained on
the $SYSTEM.SYSnn subvolume. See also configuration file and SYSnn subvolume.
system console
An HP-approved personal computer used to run maintenance and diagnostic software for NonStop
servers. New system consoles are preconfigured with the required HP and third-party software.
When upgrading to the latest RVU, software upgrades can be installed from the HP NonStop
System Console Installer CD. System consoles communicate with NonStop servers over a dedicated
local area network (LAN) or a nondedicated (public) LAN. System consoles configured as the
primary and backup dial-out points are referred to as the primary and backup system consoles,
respectively.
system enclosure
An enclosure for system components. Processor enclosures and I/O enclosures are both system
enclosures. Contrast with peripheral enclosure.
system engineer (SE)
See service provider.
system entry-point (SEP) table
A table used on TNS systems that stores the XEP entry value for each TNS operating system
procedure entry point.
system expansion
The process of making a target system larger by adding enclosures to it. The enclosures being
added can be either new enclosures or enclosures from a donor system. Contrast with system
reduction.
system generation
The process of creating an operating system to support a particular system configuration and
release version update (RVU).
system image disk (SID)
A disk copy of the NonStop operating system produced during system configuration. The DISKGEN
utility copies operating system files to the SID.
system image tape (SIT)
A tape that can be used to perform a system load on a system if the system subvolume has become
corrupted on both $SYSTEM disks. The tape contains a minimum set of software necessary to bring
up and run the system. Use the SIT only for disaster recovery. It is not needed for normal system
load. Contact the GMCSC before loading the system from a SIT; many additional steps are required
to restore your system to working order. See also tape load.
system interrupt vector (SIV)
A NonStop operating system data structure that contains the addresses of interrupt handlers,
parameters passed to interrupt handlers by special interrupt microcode, and other interrupt
processing information.
S 187