NonStop S-Series Planning and Configuration Guide (G06.29+)

Planning for System Configuration
HP NonStop S-Series Planning and Configuration Guide—523303-021
15-4
Subsystem Control Facility (SCF)
Subsystems Running a G-Series RVU
A system running a G-series RVU has multiple subsystems that handle the
configuration and management of subsystem-specific generic processes, I/O
processes, and system hardware. This illustration provides an overview of the
configuration components in these systems:
The configuration components are:
Component Function
CONFIG system
configuration database file
Contains information about the location and characteristics of
all system components. This file is on the
$SYSTEM.ZSYSCONF subvolume.
$ZCNF configuration utility
process
Is the database server for the subsystem managers and
monitor processes. Controls access to the system
configuration database. Manages requests for information
about the CONFIG file. Starts and maintains the $ZPM
persistence manager process.
$ZPM persistence
manager process
Starts and maintains persistence of subsystem managers and
monitor processes.
Starts, stops, and (optionally) restarts generic processes.
Coordinates system load and processor reload activities.
Subsystem managers and
monitor processes
Configure and control subsystem devices.
VST115.vsd
$ZZSTO
$ZZLAN
$ZZKRN
$ZZWAN
$ZPM
$ZCNF
CONFIG
$SYSTEM.ZSYSCONF.CONFIG