ersfere.blogg.se - september 2022

#Pdc to bdc install#
#Pdc to bdc windows#

#Pdc to bdc windows#

In the Windows NT "Server Manager" administrative utility, promote one of the backup domain controllers.īecause the primary domain controller is offline, Server Manager will issue the warning "Cannot find the Primary Domain Controller for. Promote the BDC to a PDC and follow these steps:

#Pdc to bdc install#

Unable to install new domain controller without a PDC running. PDC is down, but existing BDC has not been promoted to PDC. Windows NT Primary Backup Controller (PDC) is down. Unable to create new Windows NT Backup Domain Controller (BDC). One BDC can support approximately 2000 users on a network, but many factors can affect this figure.This document ( 10022585) is provided subject to the disclaimer at the end of this document. If the PDC fails, the BDC can be promoted to take its place. Backup Domain Controller for Fault ToleranceĮvery Windows NT network should have at least one BDC for fault tolerance. To make directory synchronization more efficient over the WAN link, registry parameters such as ReplicationGovernor and ChangeLogSize can be adjusted, and batch files can be scheduled using the at command to configure different replication rates at different times of the day. However, directory replication traffic between the BDCs located at the branch offices and the PDC at headquarters can cause congestion over the WAN links. This will facilitate logons by users located at branch offices, since they can log on to one of these BDCs locally instead of being validated over the relatively slow WAN link by a domain controller at headquarters.

Locate one or more BDCs belonging to the master domain at each branch office (resource domain).

The additional logon traffic can cause congestion on the WAN link, particularly at certain times of the day. Unfortunately, when users at the branch offices want to log on, they will have to use the relatively slow WAN link to do so.

Locate all BDCs belonging to the master domain at headquarters.

The users in this scenario must log on to the master domain in order to access resources in the enterprise. In a master domain model scenario, user accounts are centralized in a master domain located at company headquarters, while users and shared network resources are distributed in resource domains located at branch offices in different locations. The placement of BDCs in wide area networks (WANs) that are based on Windows NT is an important issue. A BDC can perform logon validation and authentication like a PDC, but it cannot manage accounts – for example, it cannot change user passwords.īackup Domain Controller Backup Domain Controller in WANs The BDCs periodically undergo directory synchronization in a Windows domain by retrieving a copy of the directory database from the PDC. Windows Server 2008 reintroduced this capability.Ī Windows NT domain can have zero or more backup domain controllers (BDCs) for load balancing and redundancy. A side effect of this change is the loss of ability to create a “read-only” domain controller. In these domains, all domain controllers are considered equals. In Active Directory domains running in native mode, the concept of the PDC and BDC do not exist.

When Windows 2000 was released, the NT domain, as found in NT 4 and prior versions, was replaced by Active Directory. What is BDS (backup domain controller)?Ī Backup Domain Controller is a Microsoft Windows NT domain controller containing a read-only copy of the master domain directory database located on the primary domain controller (PDC). Definition of Backup Domain Controller in Network Encyclopedia.