Availability Guide for Change Management

Contents
Availability Guide for Change Management–125506
vii
6. Reducing the Time Required for Planned
Outages
Expand 5-3
Device-Specific Connections 5-3
SNA Network Connections 5-3
OSI Network Connections 5-3
LAN Connections 5-4
TCP/IP Network Connections 5-4
Common Communications Subsystem Changes 5-4
Changes You Can Perform Online 5-4
Communications Subsystem Tool 5-4
Communications Subsystems Summary 5-5
Where to Find More Information 5-7
6. Reducing the Time Required for Planned Outages
Overview 6-1
Minimizing the Frequency of Planned Outages 6-1
Anticipating and Planning for Change 6-1
Can the Change Be Performed Online? 6-4
Reducing System and Application Startup and Shutdown Time 6-4
Writing Efficient Startup and Shutdown Command Files 6-4
Using Parallel Processing 6-6
Product-Specific Techniques 6-7
Reducing Downtime When Installing a New Operating System 6-8
Testing Your Plans 6-8
Reducing Application Downtime With DSM/SCM 6-9
6-10
7. Tools for Online Change
Overview 7-1
Subsystem Control Facility (SCF) 7-1
SCF Interface 7-1
How SCF Works 7-2
SCF Subsystems for G-Series Releases 7-3
Considerations and Limitations of SCF 7-4
SCF Command Example 7-5
Where to Find More Information 7-5
Tandem Service Management (TSM) 7-5
TSM Interface 7-6
TSM Components 7-6
Incident Reports 7-8
TSM EMS Event Viewer 7-9