Introduction to Upgrading Directory Server

When upgrading Release 4 Directory Server to Release 5, consider the following aspects of the upgrade process:

• General Upgrade Approach. The upgrade is achieved by performing a fresh install of Release 5 Directory Server and then using migration tools to recreate the previous Directory Server instances in new, distinct Release 5 Directory Server instances.

• Upgrade Dependencies. Directory Server has dependencies on a number of Java ES shared components, as listed in Table 1–7. Shared components are automatically upgraded to Release 5 by the Java ES installer when you perform an upgrade of Directory Server.

• Backward Compatibility. Release 5 Directory Server is not backwardly compatible with the Release 4 version. However, you can use the migration tools to migrate the o=NescapeRoot suffix if you continue to maintain a set of Directory Server instances relying on the Directory Server 5.x administration framework.

• Upgrade Rollback. You can do a rollback of the Release 5 upgrade is achieved by reverting to the previous version, which is left intact by the upgrade.