/var/lib/dirsrv/slapd-instance_name/bak — This contains a directory dated with the instance_name, time and date of the database backup, such as instance_name-2007_05_02_16_56_05/, which in turn holds the database backup copy.

/etc/dirsrv/slapd-instance_name/dse_original.ldif — This is a backup copy of the dse.ldif configuration file from the time of installation.