LDAP based authentication

There are limits on the various entities as part of LDAP based authentication on AIX®.

Note that LDAP infrastructure itself does not specify any limits on the database contents. However, this section documents the results based on test configurations as to limits. The following limits have been tested with respect to the LDAP based authentication on the AIX operating system:

Total number of users: Up to 500 000 users have been created on a single system and simultaneous authentication has been tested for hundreds of users.

Total number of groups: Up to 500 groups have been created on a single system and tested.

Maximum number of users per group: Up to 25 000 users have been created in a single group and various operations tested against that group.

Some of the historical POSIX interfaces might not return the complete information for the group. Refer to the individual API's documentation for such limitations. Also, the above values are based on the testing done. They do not preclude the possibility that one can configure systems with much larger users and groups provided necessary resources exist.