Create a Snapshot of AD DS by using NTDSUTIL in Windows Server 2016

By | 03/04/2018

what’s snapshot and what’s NTDSUTIL?

Manages snapshots of the volumes that contain the Active Directory database and log files, which you can view on a domain controller without starting in Directory Services Restore Mode (DSRM). You can also run the snapshot subcommand on an Active Directory Lightweight Directory Services (AD LDS) server.

In the command-line tool Ntdsutil.exe, you can use the snapshot subcommand to manage the snapshots, but you must use Dsamain.exe to expose the snapshot as a Lightweight Directory Access Protocol (LDAP) server.

NTDSUtil in Windows Server 2016 can create and mount snapshots of AD DS.

A snapshot is a form of historical backup that captures the exact state of the directory service at the time of the snapshot.

You can use tools to explore the contents of a snapshot to examine the state of the directory service at the time the snapshot was made, or connect to a mounted snapshot with LDIFDE and export a reimport objects into AD DS.

For this short easy Demo, I use my DC-CLOUD.Windows.ae server.

Lets get started,

1 – On the Domain server, which is my DC-CLOUD.Windows.ae, open command prompt and type ntdsutil and press enter.

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2 – Next, type snapshot and press enter.

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3 – Next, type activate instance ntds and press Enter.

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4 – Next, type create (this create command is to generate a snapshot of my AD) and press Enter.

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5 – Next, make sure you copy the copy the GUID somewhere (highlight the GUID and then copy).

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6 – Next, type quit 2 times to exit from snapshot.

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7 – Now, lets make some change to my ADDS by deleting 1 of my AD user, for this Demo, I choose my user from Sales Department. (Refer to my Picture)

101112Once you Deleted the user, you need to mount an Active Directory snapshot, and create a new instance so that later we can retrieve back the Deleted user.

8 – in CMD, type ntdsutil, then snapshot, then type activate instance ntds, then type list all (Refer to my Picture).

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9 – Next, you need to mount GUID no (please refer to my screen shot), type mount <GUID> no and press enter.

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10 – once successful, exit the process by typing quit 2 times.

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11 – Next, on the CMD, type dsamain /dbpath C:\$SNAP_datetime_volumec$\windows\ntds\ntds.dit /ldapport 50000

~*~ be aware that datetime will be a unique value. There only should be one folder on your C:\ drive with a name that begins with $snap. ~*~

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12 – Leave Dsamain.exe running, and do not close the CMD.

~*~ A message indicates that Active Directory Domain Services startup is complete ~*~

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13 – Next, lets explore a snapshot with Active Directory Users and Computers, on the ADUC, right click Windows.ae and click Change Domain Controller.

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14 – type DC-CLOUD:50000 on the <Type a Directory Server name[:port] here>, then click OK.

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15 – Next, browse to Sales OU and you will notice that our Deleted user is now back online.

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16 – our last step is to unmount an Active Directory snapshot.

on the command prompt, press CTRL+C to stop DSAMain.exe.

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17 – then wrap up the whole process, on the CMD, type :

ntdsutil
snapshot
activate instance ntds
list all
unmount guid (guid is the GUID of the snapshot)
list all
quit
quit

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that’s all for now.

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