July 2003
Intermediate to advanced
206 pages
7h 41m
English
book
IMS in the Parallel Sysplex Volume II: Planning the IMSplex
by Jouko Jantti, Bill Stillwell, Gary Wicks
Overview
This IBM Redbooks publication is the second volume of a series
of redbooks called IMS in the Parallel Sysplex. These redbooks
describe how IMS exploits the Parallel Sysplex functions and how to
plan for, implement, and operate IMS systems working together in a
Parallel Sysplex. We use the term IMSplex to refer to multiple
IMSs, which are cooperating with each other in a Parallel Sysplex
environment to process a common shared workload. Although we
generally think of an IMSplex in terms of online environments, an
IMSplex can include batch IMS jobs as well as IMS utilities.
IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex
Technology, SG24-6908 described the Parallel Sysplex and how IMS
exploits the Parallel Sysplex to provide user services including
data sharing, shared queues, VTAM generic resources, automatic
restart management (ARM), and systems management functions. When
migrating an IMS system from a single, non-sharing environment to
one which invokes some or all of these services, or even when
incorporating additional function into an existing IMSplex (for
example, upgrading a data sharing system to also use shared
queues), the migration process must be carefully planned. Many
decisions must be made, compromises made, perhaps even some
application or database changes made. There will be changes to
system definition and to operational procedures.
This book addresses the development of the migration plan and identifies some of the steps and considerations you might encounter when developing the plan. The result of this exercise is not to perform any of the implementation tasks but to identify those tasks which must be done and to create a plan for accomplishing them. For example, the plan can identify as a task the establishment of a naming convention for system data sets. The naming convention itself is not a part of the plan, but is a result of implementing the plan.
In this book we present planning considerations for the IMSplex.
Separate chapters are devoted to:
-Block level data sharing
-Shared queues
-Connectivity
-Systems management
-The overall IMSplex environment
The other volumes in this series are:
-IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex
Technology, SG24-6908
-IMS in the Parallel Sysplex, Volume III: IMSplex Implementation
and Operations, SG24-6929
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