IBM SG24-6320-00 manual Migration approaches for runtime environment

Draft Document for Review July 28, 2004 7:33 pm 6320ch_planning.fm

After migration only the new development environment could operate on this machine and as such it is important that you have another WebSphere Commerce Studio V5.1 environment if you need to continue to develop or maintain WebSphere Commerce Suite V5.1 site.

The following is a general ordered list of tasks that are required to complete development migration:

1.Backup: Backup files, database and environment assets

2.Install/migrate software stack

3.Perform pre-migration steps

4.Import files to WebSphere Commerce V5.6 development environment

5.Generate deployment code and access beans

6.Apply changes for code migration

7.Migrate WebSphere Commerce development instance

8.Migrate database schema and unencrypted data

9.Migrate encrypted data

10.Setting up Test environment and Testing the migrated application

3.5 Migration approaches for runtime environment

This section describes three different approaches to migrating from WebSphere Commerce Suite V5.1 to WebSphere Commerce V5.6 runtime environment. A number of factors goes into deciding which approach is best suited to the system to be migrated such as: existing configuration, hardware resources available, and acceptable downtime of the production system during course of migration.

When the appropriate migration approach is chosen, the downtime of the production system can be kept to a minimum. The following sections describes options provided by the migration tools of WebSphere Commerce V5.6. Consider the approaches and decide which is best suited for your system. The approaches are as follows:

Switch-Over migration scenario- involves creating a separated WebSphere Commerce V5.6 environment on a remote node while keeping WebSphere Commerce Suite V5.1 environment operational.

Co-existence migration scenario - involves migrating to WebSphere Commerce V5.6 environment and creating a new instance while the WebSphere Commerce Suite V5.1 environment is still running on the same machine. This is possible if the WebSphere Commerce Suite V5.1 node has

Chapter 3. Migration Strategy and Planning 45