A central directory architecture is an optional directory architecture that can be implemented in a Domino domain. This architecture is new to Notes Domino 6 and differs from the traditional distributed directory architecture in which every server in a domain has a full replica of the primary Domino Directory.
With a central directory architecture, some servers in the domain have selective replicas of a primary Domino Directory. These replicas, which are known as Configuration Directories, contain only those documents that are used to configure servers in a Domino domain, such as Server, Connection and Configuration Settings documents. A server with a Configuration Directory uses a remote primary Domino Directory on another server to look up information about users and groups and other information related to traditional directory services.
A central directory architecture has the following key features:
- Provides secondary servers quick access to new information because the servers aren't required to wait for the information to replicate to them
- Provides tighter administrative control over directory management because only a few directory replicas contain user and group information
- Enables secondary servers to run on less powerful machines because they don't have to store and maintain the primary Domino Directory
The administrator can set up a Domino Directory as either a primary Domino Directory or a Configuration Directory in one of the following ways:
- For a new server, when an additional server is registered and set up within the domain. When the new server is set up for the first time, a replica of the Domino Directory is pulled from the Registration server. This replica can be configured as either a full directory or a Configuration directory.
- For an existing server in the domain, use replication settings for the directory to change a primary Domino Directory to a Configuration Directory or to change a Configuration Directory to a primary Domino Directory.
Karen Fishwick is an independent consultant, book author and technical editor in Ottawa. She focuses on administrative troubleshooting for servers and resolving access-control problems within applications and holds the CLP designation for R6 in both the system administration and application development tracks.
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