KB193819 - Errors When Using Directory Replicator to Backup DHCP Database

SYMPTOMS

In Chapter 5, Network Services: Enterprise Level, of the Microsoft Windows NT Server Networking Guide version 4.0 on page 327, it states:

DHCP is a data base that is not automatically replicated. For this reason, Terra Flora will use the Replicator service, which is a service that is part of the Windows NT Workstation and Server, to backup the DHCP database and files to another server...

On page 328, it says in Step 3:

The Replicator service will be used to back up the necessary file stored in the System32\DHCP\Backup directory to an enterprise/Enterprise Remote server which is not running the DHCP service.

On page 329, it says in Step 9:

Change the first part of the line to indicate a different physical drive on the server, such as D:\System32\dhcp\backup.

You can now use the Replicator Service to copy that directory to a backup server.

These are documentation errors. Using the Directory Replicator Service to back up DHCP is not the Microsoft recommended way to back up the DHCP database directory.

If you follow the instructions for using the Directory Replicator service to back up a DHCP database and files as recommended in the Microsoft Windows NT Server Networking Guide version 4.0 on pages 327-333, the following errors will repeatedly appear in the System Event Log of the DHCP server:

   Event: 1014
   Source: DhcpServer
   Description: The JET Database call returned the following Error  -1022

   Event: 1014
   Source: DhcpServer
   Description: The JET Database call returned the following error -1032

   Event: 1014
   Source: DhcpServer
   Description: The JET Database call returned the following error -524

   Event 1016
   Source: DhcpServer
   Description: The DHCP server encountered the following error when
                backing up the user database with a hex data status of
                "2d 4e 00 00 (0x4e2d =20013)"

Errors When Using Directory Replicator to Backup DHCP Database

SYMPTOMS

RESOLUTION