Backup database directories that reside in the Planning Analytics installation directory

If your existing TM1 Server database directories and files are stored in the Planning Analytics installation directory, you must move them to a location outside of the installation directory prior to uninstalling Planning Analytics 2.1.7 or earlier.

An uninstall removes everything in the installation directory. If you do not move the TM1 Server database directories and files, you won't be able to restore them after upgrade.

Note that all sample database directories and files are created and stored in the installation directory. If you've made any changes to the sample databases for training or other purposes, be sure to back them up as well.