STORE and TurboSTORE/iX Products Manual (B5151-90003)

150 Chapter10
Backing Up the System Configuration
SYSGEN Backup Capabilities
SYSGEN Backup Capabilities
A complete system backup consists of system files, user files, the file system directory, and
system configuration information. STORE copies only system and user files and the file
system directory to backup.
To back up your system configuration, use the SYSGEN utility. This creates a system load
tape (SLT). A system load tape contains system configuration information, and all the
system files necessary to boot and run a basic system.
SYSGEN requires that you have system supervisor (OP) capability to view system
configuration data and system manager (SM) capability to save changes.
SYSGEN provides a series of command-driven user interfaces and online help facilities
that describe command syntax and options. Through the interfaces, referred to as
configurators, you can build new system configurations and generate a system load tape
based on the new information.
SYSGEN stores configuration data in a group of files that are maintained by one or more of
the five system configurators. Each configurator provides you with an interface to make
changes to an independent portion of the configuration data. For example, there is an I/O
configurator that allows you to change the physical makeup of the system and a Log
configurator for making changes to the type and quality of system and user log files.
The base group is the group containing the set of configuration files to be read or modified
by SYSGEN. The default group is the group that was specified (or defaulted to) when the
system was started. If a base group is not specified, then the default group becomes the
base group. The default group is generally CONFIG.SYS.
CONFIG.SYS is a permanent fileSet containing information on device classes, assigned I/O
paths, assigned LDEV numbers, volume names, and various data in system files. When
changes are made to the system configuration from one or more of the configurators, the
files remain unchanged until you formally keep the new information through the SYSGEN
KEEP command. You can always back out of changes until you actually keep them. You may
KEEP the base group or to a group you specify.
Multiple configurations can be kept on disk and stored to backup through a full system
backup. When you KEEP your changes to another group name (for example, CONFG950), a
new group is created in the SYS account with an identical fileset. When a system load tape
is generated, however, the current configuration data is always written to the SLT as
CONFIG.SYS regardless of what your working name on disk is for the group. This reduces
confusion over which group is the current configuration or what its original name was if
you suddenly have to regenerate a system. For information on changing or creating
configurations groups, refer to System Startup, Configuration, and Shutdown Reference
Manual.