Contact your local IBM representative or authorized dealer for additional information on permitted upgrades.
For servers that do not have an upgrade path, use the data migration section of this book. This would include scenarios such as an AS/400® Model 540 to an iSeries 400 Model 270.
Why Upgrade from one AS/400 or iSeries 400 Server to Another iSeries 400 Server?
You might ask yourself why IBM is doing this and why upgrade your server now? Most customers need to increase performance and add capacity.
What is an Upgrade?
In this book, an upgrade is any improvement made to the software or the hardware of an iSeries 400 or AS/400 model that retains the serial number of the iSeries 400 or AS/400 model. This includes moving the compatible hardware, the Licensed Internal Code, operating system, and the licensed programs to a new target system for better performance and reliability.
A data migration is the process of moving only the data from one iSeries 400 or AS/400 model to a new iSeries 400 model, with a new serial number.
Upgrade process flow
The following flow chart describes each step of an MES upgrade and lists the required outputs for each stage.
