HP-UX Directory Server Administrator Guide HP-UX Directory Server Version 8.1 (5900-3098, May 2013)

Three databases are added to store the data contained in separate suffixes.
This division of the tree corresponds to three databases.
Database one contains the data for ou=people plus the data for dc=example,dc=com,
so that clients can conduct searches based at dc=example,dc=com. Database two contains
the data for ou=groups, and database three contains the data for ou=contractors.
Multiple databases for one suffix.
Suppose the number of entries in the ou=people branch of the directory tree is so large that
two databases are needed to store them. In this case, the data contained by ou=people
could be distributed across two databases.
2.3 Creating and Maintaining Databases 39