To reduce load on a BDC, you could pause the netlogon service.
Pausing the netlogon service has the following effects:
1. Does not disconnect any existing sessions.
2. Prevents users from logging on and creating a new connection.
3. When connecting to a share on the BDC with the paused netlogon service, validation occurs locally.
Stopping the netlogon service is not a good idea as it prevents the BDC from receiving updates, which could cause a user to be denied access when they change their password.
You must allow the netlogon service to run at startup, so a secure channel can be established.
You can use Control Panel / Services / netlogon / Pause to pause it and Control Panel / Services / netlogon / Continue to restart it. To automate this process:
1. You can schedule (AT) the pause and continue for various times during the day using the net pause and net continue command.