To ensure that the restore process overwrites Exchange databases, you must configure the databases that are being restored.
To configure the Exchange databases so the restore process overwrites them

1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
2. In Exchange System Manager, in the console tree, expand Administrative Groups, and then expand the administrative group that contains the server that has the storage groups you want to restore.
3. Expand the server that contains the databases you want to restore, right-click each database, and then click Properties.
   Mailbox store properties
4. In Database Name Properties, on the Database tab, select the This database can be overwritten by a restore check box (see below). You must select this option for every database that will be overwritten by the restore process. This option is cleared every time a database is mounted, thereby preventing your databases from being overwritten by mistake.

The information in this article applies to:

• Microsoft Exchange Server 2003 Enterprise Edition
• Microsoft Exchange Server 2003 Standard Edition
• Microsoft Windows Small Business Server 2003, Premium Edition
• Microsoft Windows Small Business Server 2003, Standard Edition
• Microsoft Exchange 2000 Server