Launch SSMS or SQL Server Management Studio
Connect to SQL Server. Refer to the Configuration Manager > SQL Settings for the "Server\Instance Name" to connect to.
Locate the Content Central Database to back up under the Databases section. Refer to the Configuration Manager > SQL Settings for the "Database Name".
Right-click on the database.
In the "Database Menu" select Tasks > Back Up.
In the Backup Database dialog box, select "Back up to" "Disk".
Click "Add". Select the destination folder of the backup file. It should have a .bak file extension.
Click "OK" to start the backup process.
When the Backup Tasks is complete, using the File Explorer, navigate to the Destination Folder selected during the Backup Process.