Maintenance of a DHCP database involves backing up and restoring the database. The location of the database and its backup location can be configured at the server level within its Properties sheet, as shown in Figure 2-8.

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FIGURE 2-8 Configuring the location of the DHCP database, as well as its backup location.

You can back up and restore the DHCP database through Actions at the server level in DHCP Manager. Also, to change an automated backup that runs every 60 minutes, set the BackupInterval value in the registry at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters.

At times you may need to reconcile the database due to inconsistencies in client addressing between summary and detailed information. To do so, select Reconcile All Scopes from the address level (IPv4 or IPv6) or at the scope level by clicking Reconcile.