Tasks and Considerations
Active Directory is optimized for read-heavy scenarios, that is, where the workload consists of more query operations than update operations. The most important performance tuning step is to ensure that the server has sufficient RAM to be able to cache the most frequently used portion of the database in memory. By monitoring the Database Cache % Hit on the server, a determination of whether additional memory is required can be made. The percentage of hits will be low if the directory service was just recently started.
In scenarios where the directory is write-heavy, then optimize the disk subsystem for performance. Using hardware RAID controllers, low-latency high RPM disks, and battery-backed write caches on the controller ...
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