Recipe 11.19 Disabling Automatic Site Coverage for a Domain Controller
11.19.1 Problem
You want to prevent a domain controller from covering sites outside of the one it resides in.
11.19.2 Solution
11.19.2.1 Using a graphical user interface
Run regedit.exe from the command line or Start
Run.Expand HKEY_LOCAL_MACHINE
SYSTEM 
CurrentControlSet Services Netlogon
Parameters.Right-click on Parameters and select New
DWORD Value.For the name, enter AutoSiteCoverage.
Double-click on the new value, enter 0 under Value data, and click OK.
11.19.2.2 Using a command-line interface
> reg add HKLM\System\CurrentControlSet\Services\Netlogon\Parameters /v[RETURN]
AutoSiteCoverage /t REG_DWORD /d 0
11.19.2.3 Using VBScript
' This code disables auto site coverage
strNetlogonReg = "SYSTEM\CurrentControlSet\Services\Netlogon\Parameters"
const HKLM = &H80000002
Set objReg = GetObject("winmgmts:root\default:StdRegProv")
objReg.SetDWORDValue HKLM, strNetlogonReg, "AutoSiteCoverage", 0
WScript.Echo "Site coverage disabled"
11.19.3 Discussion
If you want to reduce the load on a domain controller, one way is to prevent it from covering for other sites. Automatic site coverage happens when a site does not have any member domain controllers.
11.19.4 See Also
Recipe 11.18 for viewing the site coverage for a domain controller
