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1. From the Data Management tab, select the DNS tab -> Zones tab -> zone check box, and then click the Edit icon.
2. In the Authoritative Zone editor, click Name Servers.
3. Select Use this set of name servers, and enter the details as specified in Assigning Zone Authority to Name Servers.

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• • Disable Zone Synchronization: Select this to disable zone synchronization for the selected zone. Zone synchronization is enabled when you clear the check box.

4. Save the configuration.

Enabling and Disabling DNS Zone Synchronization for Multiple Zones

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• Zone synchronization is enabled by default.
• A zone must be synchronized at least once before you can disable synchronization.
• Zones defined on a Microsoft DNS server are listed in the NIOS appliance, regardless of whether they are synchronized or not.
• When you delete a zone on the Microsoft server, it is automatically deleted from NIOS, irrespective of its synchronization setting.
• When you create a zone on the NIOS appliance and disable zone synchronization, the zone is not created on the Microsoft server until you enable zone synchronization.
• When you disable zone synchronization, you can perform operations for which you have access rights on the NIOS appliance. This includes changes made directly to the zone or as a result of changes made in another zone. Examples: delegation creations and editing name servers.

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• When you disable synchronization for a zone and perform certain operations on the respective zone, the outcomes of those operations are not replicated on any Microsoft servers assigned to the zone. For Microsoft primary servers, any resource records or zone properties (including name servers) that you create, modify, or delete on the NIOS appliance are not copied to the Microsoft server. For Microsoft secondary servers and stub servers, any zone properties (including name servers and masters) that you create, modify, or delete on the NIOS appliance are not copied to the Microsoft server.
• When you disable synchronization for a zone, the zone retains the Microsoft server that was last selected as the master before synchronization was disabled. The master retains its role when you enable synchronization again.
• When you disable synchronization, NIOS completes the ongoing process. The synchronization effectively stops at the end of the synchronization. NIOS resumes the synchronization of the zone as soon as the member assigned to the master MS server is notified through Grid replication that the zone is no longer disabled for synchronization and the zone is overdue for synchronization. This is based on the last time the zone was successfully synchronized and the synchronization interval at the time of re-enabling the synchronization.
• Note that the zones that are disabled for synchronization are not accounted in the overall synchronization status.
• NIOS retains the zone synchronization disable setting when you enable or disable the DNS synchronization setting of any MS server that is assigned to the zone.

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