Just a quick one to say our partners Symas
have written a very nice peice about how to pick your base hardware and operating system for use with OpenLDAP in your Enterprise
Read the full article
The key to this first factor is that OpenLDAP is the most efficient, most stable, and most suitable LDAP[?] Directory Service technology for Enterprise production use. Installing it as a new service or an upgrade to an older technology will be the most cost-effective step assuming the capacity is available. In general, replacing an older Directory Technology will reduce the processor load by two to five times. It will also improve the stability of the server(s) making simplification of configurations tuned to frequent server outages possible. Symas OpenLDAP is available under inexpensive annual support subscriptions with no consideration for the number of CPUs in the server or the number of objects/entries in the Directory, too. So, our preference of platform, in general, is put OpenLDAP (Symas OpenLDAP) on what you’ve got!