Replication within a site occurs as a response to changes elsewhere in the site. Replication across sites occurs based on the replication schedule and interval. It is also possible to enable change notifications across sites.
When a change occurs on a domain controller, two configurable intervals determine the delay between the following events:
- Notification to the first partner.
- Notification to each subsequent partner.
The above two intervals serve to:
- Stagger network traffic caused by replication.
- Spreads out the load of responding to replication requests from its partners.
The following table lists the default notification delays:
|
Operating system
|
Notify first partner (sec)
|
Subsequent partner (sec)
|
Forest functional level
|
|
Windows 2000
|
300
|
30
|
Windows 2000
|
|
Windows Server 2003 (upgraded from Windows 2000)
.gif) Note |
| If you changed the default values, then those values that you set are retained after you upgrade from Windows 2000 to Windows Server 2003. |
|
300
|
30
|
Windows 2000
|
|
Windows Server 2003
|
15
|
3
|
Windows 2000
|
|
Windows Server 2003 (either upgraded from Windows 2000 or a clean install)
|
15
|
3
|
Windows Server 2003
|
The following table lists the storage location of notification delay values for each operating system.
|
Operating system
|
Location
|
Attribute
|
|
Windows 2000 Server
|
HKLM\SYSTEM\CSS\Services\NTDS\Parameters
|
- Replicator notify pause after modify (secs)
- Replicator notify pause between Directory System Agent (DSAs) (secs)
|
|
Windows Server 2003
|
Cross-reference object for each directory partition in the configuration partition.
|
- msDS-Replication-Notify-First-DSA-Delay
- msDS-Replication-Notify-Subsequent-DSA-Delay
|
Repadmin /notifyopt could be used to view or change the notification timing settings of a specified directory partition in Windows Server 2003.
Syntax
repadmin /notifyopt <DC_LIST> <NamingContext> [/first: Value] [/subs: Value]
|
Parameter
|
Definition
|
|
<DC_List>
|
Specifies the host name of a domain controller, or a list of domain controllers separated by a space. For details about <DC_LIST>, see repadmin /listhelp.
|
|
<NamingContext>
|
Specifies the distinguished name of the directory partition on the source domain controller.
|
|
/first
|
The number of seconds after a change is made before the domain controller notifies its first replication partner that there is a change.
|
|
/subs
|
Once the first replication partner is notified of a change, the subs parameter specifies the number of seconds to wait before notifying the next replication partner.
|
Example 1: Displaying the default notification delay on the ForestDnsZones partition
Example 2: Changing the defaults to 300/30 on the ForestDnsZones
.gif)
|
Note |
| In order to make this change, you have to run /notifyopt against the Domain Naming Master. See the highlighted text in figure 3.8.2. |