Before copying the database files for a backup, the database must be detached from the Blackbaud Management Console, or the Blackbaud Management Console's backup function must be used. Using the Blackbaud Management Console function allows you to create a .bak file, which can be attached to the Blackbaud Management Console.
 

To backup the database, refer to one of the following:

Also, refer to How to restore from or test a backup in the SQL Server versions (BB96254)