When restoring a server, the dse.ldif configuration file must contain the same configuration information as when the server was backed up.
$ cp instance-path/config/dse.ldif archive-dir
When you perform the following actions, Directory Server automatically backs up the dse.ldif configuration file in the directory instance-path/config.
When you start Directory Server, a backup of the dse.ldif file is created in a file named dse.ldif.startOK.
When you make modifications to the cn=config branch, the file is first backed up to a file named dse.ldif.bak in the config directory before the server writes the modifications to the dse.ldif file.