What is offline defragmentation in AD and how do we do it?
Answer Posted / yuvaraj.sengottaiyan
offline defragment is nothing but,just take the backup of
ntds.dit and rebooot the server press f8 and go to
directory service mode login as local admin password
Note:In case if you not able to login in local admin reset
the dsrm passowrd and try again.
once u logged successfully in the local admin then go to--
>cmd-->type -->ntdsutil-->press enter
type-->file and press enter once again type --info-->press
enter
Note:(file)This will cause NTDSUTIL to switch to the File
Maintenance prompt
(info)This will cause NTDSUTIL to display information about
the size and location of the Active Directory database
Now you can view the displays current
information about the path and size of the Active Directory
database and its log files
Type compact to drive:\directory, and then press ENTER,
where drive and directory is the path to the location you
established the database,here you can specifiy any drive
location and directory
EX:Note You must specify a directory path. If the path
contains any spaces, the entire path must be surrounded by
quotation marks. For example, type:
compact to "c:\new folder" or "D:\new folder"
A new database named Ntds.dit is created in the path you
specified
If defragmentation succeeds without errors, follow the
Ntdsutil.exe on-screen instructions. Delete all the log
files in the log directory by typing the following command:
del drive :\ pathToLogFiles \*.log
Atlast you Copy the new Ntds.dit file over the old Ntds.dit
file in the current Active Directory database
Restart the computer normally.
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