Migration planning

Because of changes to WebSphere Application Server architecture, it is not possible to perform a straight migration from Sametime® 8.5.x (based on WebSphere 7.0.0) to Sametime 9 (based on WebSphere 8.5.5). Instead, you must deploy Sametime 9 separately from your 8.5.x deployment and then reproduce any custom configuration items to the Sametime 9 deployment.

Deploy Sametime 9 separately so that users can continue working in Sametime 8.5.2x while you migrate data and recreate environment settings and product customizations. When the Sametime 9 deployment is ready for production use, you can redirect clients to Sametime 9 and shut down the Sametime 8.5.2x deployment.

For more information about migrating from Sametime 8.5.2 to Sametime Migrating from Sametime 8.5.2x9, see the Migrating from Sametime 8.5.2x section of the documentation.