Installation and Upgrade Guides › SiteMinder Upgrade Guide › Planning an Upgrade › How to Plan a Migration › Mixed SiteMinder Environments

Mixed SiteMinder Environments

As you migrate to r12.0 SP3, your environment can contain a combination of SiteMinder components at different versions. In addition, you do not have to upgrade all of your components to r12.0 SP3. You can leave some components at the current version. Consider the following:

• If your environment contains a combination of r6.x components, r12.0 SP3 Policy Servers can continue to communicate with r6.x policy stores.
• If your environment contains a combination of r12.0 SP1 or r12.0 SP2 components, r12.0 SP3 Policy Servers can continue to communicate with r12.0 SP1 or r12.0 SP2 policy stores.
• If you have a mix of Policy Server versions, users can continue to access resources and have the same experience using r6.x QMR x, r12.0 SP1 or r12.0 SP2 Agents.
• A mixed environment can support single sign-on.