Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

1 Introducing Open System Services
The Open System Services (OSS) environment provides a user and programming interface similar
to that of the UNIX operating system. The OSS environment combines the benefits of the UNIX
operating system with the features of the HP NonStop operating system.
Open System Services differs from the UNIX operating system in that almost all management and
operations activities are performed through Guardian environment commands. The OSS environment
is managed in a similar fashion to the Guardian environment.
NOTE: The term “management” is used in this guide instead of “administration” because
“management” is the term used in the Guardian environment.
This chapter presents an overview of OSS management and operations. It briefly describes:
• “The Operating System Environments” (page 27)
• “Management Tools” (page 27)
• “Management and Operations Tasks” (page 28)
• “OSS File System Concepts” (page 30)
• “Components to Be Managed” (page 33)
The Operating System Environments
The OSS environment coexists with the Guardian environment on a NonStop system, as shown in
“The Operating System Environments” (page 27). Environments are sometimes called “personalities”
in other HP documentation.
You use management tools in both environments. You can use features of each environment from
the other environment.
Table 1 The Operating System Environments
Guardian EnvironmentOSS Environment
Guardian products, subsystems, and command interpretersOSS Shell and Utilities
1
Guardian Application Program InterfaceOSS Application Program Interface
Guardian File SystemOSS File System
NonStop Operating System
1
Beginning with the J06.14 and H06.25 RVUs, the OSS Core Utilities product (T1202) provides additional Open Source
utilities. For details, see “OSS Core Utilities User Commands” (page 243)
Management Tools
Your primary management tool is the Subsystem Control Facility (SCF) module for the OSS Monitor,
used from the Guardian environment. Reference information for that module appears in “Open
System Services Monitor” (page 251).
Any Guardian-environment command that you can enter at an HP Tandem Advanced Command
Language (TACL) prompt can also be entered from the OSS environment using the gtacl command
at an OSS shell prompt. See the gtacl(1) reference page either online or in the Open System
Services Shell and Utilities Reference Manual for additional information about that command.
You might find it convenient to manage the OSS environment from the OSS environment. Therefore,
you should know something about OSS commands and utilities.
The Operating System Environments 27