Install SCVMM (System Center Virtual Machine Manager) Admin Console

This video is part of TFS 2010 Enterprise installation and Configuration Guide, for more information about the full guide, visit the guide on Codeplex

If your migration process only requires migrating the work items, with no need to migrate links & relations between them, you can consider using the TFS Integration Platform, which is less complicated than the VSTS Sync Migrator. For more information about this tool, visit TFS 2017 Migration To VSTS with TFS Integration Platform, have a look on the following post: