How to do Offline Defragmentation of Active Directory?
Submitted by: AdministratorActive Directory routinely performs online database defragmentation, but this is limited to the disposal of tombstoned objects. The database file cannot be compacted while Active Directory is mounted.
To defrag ntds.dit offline:
★ Back up System State in the backup wizard.
★ Reboot and select Directory Services Restore Mode.
★ At the command prompt:
★ Ntdsutil
★ Files
★ Info
This will display current information about the path and size of the Active Directory database
and its log files.
Compact to D:DbBackup
You must specify a directory path and if the path name has spaces, the command will not work unless you use quotation marks:
Quit (till you reach the command prompt)
A new compacted database named Ntds.dit can be found in D:DbBackup.
Copy the new ntds.dit file over the old ntds.dit file. You have successfully compacted the Active Directory database.
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To defrag ntds.dit offline:
★ Back up System State in the backup wizard.
★ Reboot and select Directory Services Restore Mode.
★ At the command prompt:
★ Ntdsutil
★ Files
★ Info
This will display current information about the path and size of the Active Directory database
and its log files.
Compact to D:DbBackup
You must specify a directory path and if the path name has spaces, the command will not work unless you use quotation marks:
Quit (till you reach the command prompt)
A new compacted database named Ntds.dit can be found in D:DbBackup.
Copy the new ntds.dit file over the old ntds.dit file. You have successfully compacted the Active Directory database.
Submitted by:
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