Once the virtual machine (VM) has been deployed successfully, you need to add a 2nd virtual hard disk. This hard disk will act as the storage device for your Storage Sync appliance. The hard disk type must be SCSI, and the recommended size of the disk is the amount of data that will be stored on this Storage Sync appliance. This step is mandatory. Storage Sync appliance will not start without the 2nd hard disk. (see the Step 2 in the Storage Sync Installation Guide).
If you have added the 2nd hard disk, you may need to restart your Storage Sync appliance. Now, navigate to http://ipaddress:8806 and you will see the Storage Sync settings page.