Working with backup sets : Cloud (Salesforce.com) backup sets (Windows) : Creating a Salesforce.com backup sets : Specifying the server
 
Specifying the server
1. Select the Cloud Server to backup.
The Enter Network Credentials screen appears.
F1 Help: "Specify Credentials (Windows DS-Client)"
2. Enter the credentials to the (Salesforce.com) Cloud Server and click OK.
3. Enter the Salesforce.com username and password.
4. Select the target database for backup (Production or Sandbox).
5. Enter the security token that was sent to you by email from Salesforce.com. You can request for a security token from the Salesforce.com website (Click Setup > My personal information > reset my security token).
6. Click OK.