A. In Windows 2000, Microsoft included a version of an Exchange Server utility—esentutl.exe—that can defragment database files. At a command prompt, type the following command to defragment ntds.dit (the default name for the Active Directory—AD—database file):
ESENTUTL /D ntds.dit \[options\]For a list of the command options, type
ESENTUTL /helpUsually, you use Ntdsutil to defragment your AD database; Ntdsutil is still the most supported version.