Book description
You may have several triggers to investigate the feasibility of
moving a workload or set of workloads to the IBM® System
z® platform. These triggers could be concerns about
operational cost, manageability, or delivering the agreed service
levels, among others.
Investigating the feasibility of a possible migration or transition
to any other platform, including System z, requires a number of
basic steps. These steps usually start with an understanding of the
current workload and its pain points, and end with a business case
to move the workload. It is important to find out how easy a
migration is going to be and how much risk will be involved.
In this IBM Redbooks® publication we offer thoughts on how to move through these steps. We also include a chapter with a System z technology summary to help you understand how a migrated workload may fit on the platform.
Our focus in this book is on workloads that are mission-critical and require a high level of availability, including disaster recovery.
Table of contents
- Front cover
- Notices
- Preface
- Chapter 1. Management summary
- Chapter 2. Introduction to systems availability
- Chapter 3. Target architectures for availability
-
Chapter 4. System z technology options
- 4.1 Operating systems
- 4.2 Virtualization
- 4.3 Resource management
- 4.4 Workload management
- 4.5 Network and communications
- 4.6 Availability and scalability
- 4.7 Security
- 4.8 Transaction management
- 4.9 Data management
- 4.10 Programming environment
- 4.11 Integration
-
4.12 Systems management
- 4.12.1 Availability and performance management
- 4.12.2 Capacity management and sizing
- 4.12.3 Security management
- 4.12.4 Service level management
- 4.12.5 Problem and change management
- 4.12.6 Configuration management
- 4.12.7 Release management
- 4.12.8 Storage management
- 4.12.9 Service continuity management
- 4.12.10 Incident management
- 4.12.11 Asset and financial management
- 4.13 Specialty processors
-
Chapter 5. Operational models for high availability
- 5.1 Introduction
- 5.2 Single-site Parallel Sysplex
- 5.3 Single-site Parallel Sysplex with two servers and disk-levelreplication (basic Hyperswap)
- 5.4 Dual site with data replication
- 5.5 Dual-site Parallel Sysplex with data-level replication (active/passive)
- 5.6 Dual-site Parallel Sysplex with disk-level replication (Metro Mirror)
- 5.7 Dual-site Parallel Sysplex with disk-level replication (Global Mirror)
- 5.8 Linux on System z - Linux HA
- 5.9 Linux on z - GDPS
- 5.10 Model summary
- Chapter 6. Workload assessment
-
Chapter 7. Transition approaches
- 7.1 Introduction and overview of transitional approaches
- 7.2 Application patterns
-
7.3 Transitional patterns
- 7.3.1 TP1: Buy a software package or recode the application from scratch
- 7.3.2 TP2: source code conversion
- 7.3.3 TP3: Port the existing application by recompiling on System z
- 7.3.4 TP4: Redeploy the existing application as it exists today
- 7.3.5 Summary of transitional patterns
- 7.3.6 Mapping application patterns to transitional patterns
- 7.3.7 Middleware provisioning
- 7.4 Switchover approaches
- 7.5 Options for application modernization
- 7.6 Summary
- Chapter 8. System z capacity planning, sizing, and TCO
- Related publications
- Back cover
Product information
- Title: Considerations for Transitioning Highly Available Applications to System z
- Author(s):
- Release date: September 2011
- Publisher(s): IBM Redbooks
- ISBN: 9780738435855
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