Availability Guide for Change Management

About This Manual
Availability Guide for Change Management–125506
xii
What’s in This Manual?
What’s in This Manual?
This manual is organized in seven sections and a glossary. The glossary defines
technical terms and acronyms.
•
Section 1, “Introduction to Change Management,” describes the factors that cause
change, defines change management in the Tandem environment, describes the goals
of change management, explains how Tandem measures outages, and shows how
change management relates to the operations management (OM) model.
•
Section 2, “Change Control,” defines change control, shows how change control
affects system and application availability, describes the requirements for
successfully implementing a change control process, and outlines the phases of the
change control process.
•
Section 3, “Making System Software and Hardware Changes Online,” describes the
online reconfiguration capabilities of Subsystem Control Facility (SCF), explains
how you can configure your system to accommodate future growth, identifies
hardware changes that can be performed without taking your NonStop system down,
and shows you how to install interim product modifications (IPMs) for certain
products without performing a system load.
•
Section 4, “Making Application Subsystem Changes Online,” identifies the changes
you can perform to NonStop Transaction Services/Massively Parallel (TS/MP),
NonStop Structured Query Language/Massively Parallel (SQL/MP), and NonStop
Transaction Manager/MP (TM/MP) without taking your NonStop system down. It
also discusses making online changes to the NonStop TUXEDO, and Pathway
transaction monitor environments these core services support.
•
Section 5, “Making Communications Subsystem Changes Online,” identifies
common communications subsystem changes and the tools you use to perform those
changes without taking your NonStop system down.
•
Section 6, “Reducing the Time Required for Planned Outages,” shows you how to
minimize the frequency of planned outages, describes techniques you can use to
reduce system and application startup and shutdown time, and explains how you can
reduce the time required to install a new version of the operating system.
•
Section 7, “Tools for Online Change,” describes the features and capabilities of
SCF, Tandem Service Management (TSM), and the NonStop TS/MP, NonStop
SQL/MP, and NonStop TM/MP management tools.