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Plan for the site database for Configuration Manager

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Applies to: Configuration Manager (current branch)

The site database server is a computer that runs a supported version of Microsoft SQL Server. SQL Server is used to store information for Configuration Manager sites. Each site in a Configuration Manager hierarchy contains a site database and a server that is assigned the site database server role.

  • For central administration sites and primary sites, you can install SQL Server on the site server, or you can install SQL Server on a computer other than the site server.

  • For secondary sites, you can use SQL Server Express instead of a full SQL Server installation. The database server must, however, be run on the secondary site server.

  • For SQL Server Always On availability groups, set the database recovery model to FULL.

  • For non-availability group configurations, set the database recovery model to SIMPLE.

Further information on SQL Server Recovery Modes can be found in Recovery Models (SQL Server).

The following SQL Server configurations can be used to host the site database:

  • The default instance of SQL Server

  • A named instance on a single computer running SQL Server

  • A named instance on a failover cluster instance of SQL Server

  • A SQL Server Always On availability group

To host the site database, the SQL Server must meet the requirements detailed in Support for SQL Server versions for Configuration Manager.

Remote database server location considerations

If you use a remote database server computer, ensure that the intervening network connection is a high-availability, high-bandwidth network connection. The site server and some site system roles must constantly communicate with the remote server that is hosting the site database.

  • The amount of bandwidth required for communications to the database server depends on a combination of many different site and client configurations. Therefore, the actual bandwidth required cannot be adequately predicted.

  • Each computer that runs the SMS Provider and that connects to the site database increases network bandwidth requirements.

  • The computer that runs SQL Server must be located in a domain that has two-way trust with the site server and all computers running the SMS Provider.

  • You can't use a failover cluster instance of SQL Server for the site database server when the site database is co-located with the site server.

Typically, a site system server supports site system roles from only a single Configuration Manager site. You can, however, use different instances of SQL Server to host a database from different Configuration Manager sites. To support databases from different sites, configure each instance of SQL Server to use unique ports for communication.