HP Integrity NonStop H-Series - Manual (Page 21)

Host System
From a host system, use the NonStop Software Essentials interface on the host system to perform
these tasks:
• Transfer software files to target systems
• Receive software into the NonStop Software Essentials environment
• Archive the software
• Plan and create software revisions
• Package and initiate the placement of software on distributed target systems
One host system can centrally control the configurations of many target systems or several host
systems can manage different systems in one site. If you maintain separate development and
production systems, you could use one host system for the development systems and another host
system for the production systems.
Target System
DSM/SCM runs on each target system, where it places (applies) the software received from the
host system. Any system that is not a host system is a target system. The host system includes its
own target because the host activates and manages the system software on itself.
Host and Target System Communication
A host system can be connected to a target system in one of three ways:
• Network connected using Expand
• Network connected without Expand (Transfer the files using either file transfer tools or disk.)
• Not network connected (Transfer the files to the remote system using magnetic tape.)
When configuring the network connection between a host system and a target system, use the
REMOTEPASSWORD command to run the RPASSWRD program with which you can establish
passwords for the target system as needed. For more information, see the Guardian User’s Guide.
NOTE: NonStop Software Essentials can show status and information from a target system only
if the user is logged on with appropriate network password.
Physical Target
A physical target system (often referred to as target system) is any system managed by NonStop
Software Essentials. A physical target system is defined with one or more logical targets.
Logical Target
A logical target is a specific software configuration on a target system. Every system, including
the host system, contains at least one logical target. The host activates and manages its own
software as it does for any of its target systems.
To manage different software configurations independently, use multiple logical targets. Provide
a unique name for each logical target on the system. Each logical target requires its own separate
$SYSTEM volume. The same host system must manage all the logical targets on a system.
The Software Archive
The software archive on the host system provides storage for software received into DSM/SCM.
The archive stores:
• All the software packages (or “inputs” in DSM/SCM terminology) received from release version
updates (RVUs), software product revisions (SPRs), and third-party products. The configuration
revisions use the archived files when the software is configured.
• The system generation output for configurations, including the OSIMAGE file.
The NonStop Software Management Environment 21