3.1.1.5.1.6 Urgent Replication
Let N be the NC replica on the server. There are few originating/replicated updates in N that need to be replicated immediately to each destination DC that has an entry in N!repsTo. Updates that need to be replicated immediately are listed below:
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Creation of nTDSDSA object.
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Creation of crossRef object.
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Updates to schema object (attributeSchema or classSchema).
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Deletion of nTDSDSA object.
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Deletion of crossRef object.
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Update to secret object.
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Update to rIDManager object.
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Update to lockoutTime, pwdLastSet, and userAccountControl attributes as specified in [MS-SAMR] section 3.1.1.8.
The server behavior for urgent replication is specified in section 3.1.1.5.1.5.