When started on Windows, the report processing servers by default log on to the local system as services with the Windows "LocalSystem" account. This account determines the permissions that each service is granted on the local machine. This account does not grant the service any network permissions.
In the majority of cases, this account is irrelevant in relation to the server's task of processing reports against your data source. (The database logon credentials are stored with the report object.) Thus, you can usually leave each server's default logon account unchanged or, if you prefer, you can change it to a Windows user account with the appropriate permissions.
However, there are certain cases when you must change the logon account used by the processing servers. These cases arise either because the server needs additional network permissions to access the database, or because the database client software is configured for a particular Windows user account. This table lists the various database/ driver combinations and shows when you must complete additional configuration.
Tip: Running a service under an Administrator account does not inadvertently grant administrative privileges to another user, because users cannot impersonate services.
For details on changing the user accounts, see Changing the server user account. For a complete list of supported databases and drivers, refer to the platform.txt file included with your installation.
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