Restoring from a backup
This applies to version 4.0 and later.
NOTE: This do not apply when running with external database.
This will require a complete stop of the server.
If applicable, perform a backup.
Extract the version of the backup file you want to restore to a temporary directory.
Stop the server.
Replace the files in <installation_root>/data with the files from the files in the back up.
Start the server and verify.