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

Planning for System Configuration
HP NonStop S-Series Planning and Configuration Guide—523303-021
15-3
Changing the System Topology
Changing the System Topology
To change the topology of a system, you must shut down the system. The NonStop S-
Series System Expansion and Reduction Guide gives complete information about the
procedures necessary to reconfigure your system offline.
Changing the CONFTEXT File
Any changes to the CONFTEXT file take effect after the next system load. If you want
to modify the CONFTEXT file, refer to the System Generation Manual for G-Series
RVUs.
You can generate a new operating system by modifying the CONFTEXT file using
DSM/SCM. Refer to the DSM/SCM User’s Guide.
Online Configuration Tasks
Subsystem Control Facility (SCF)
The Subsystem Control Facility (SCF) configures, controls, and collects information
about subsystems and the objects (devices, subdevices, processes, and so forth)
belonging to each subsystem.
Using SCF commands, you can:
•
Add, alter, or delete objects (such as I/O processes or generic processes) in the
system configuration
•
Obtain configured or current information about objects
System configuration changes that are made online using SCF take effect as soon as
the object is restarted (using the SCF START command). For subsystems that are new
for the G-series, these changes are permanent; that is, they persist through processor
and system loads (unless you load the system with a different configuration file). Refer
to the SCF Reference Manual for G-Series RVUs.
Initial CONFIG file
When a system is delivered, the $SYSTEM.ZSYSCONF.CONFIG file contains a
standard system configuration created by HP. The contents of this file, called the initial
CONFIG file, are described in Section 8, Initial Configurations.
This initial CONFIG file is also saved on your system as the ZSYSCONF.CONF0000
file. For example displays from the CONF0000 file. Refer to the SCF Reference
Manual for G-Series RVUs.