RBackup Servers can be hosted on "cloud" services like Amazon EC2 and Rackspace - any service that provides a Windows virtual machine that you can access via Terminal Services. In this configuration your Endpoints would send their data to your RBS Server hosted on a cloud service, and the RBS Server would store the data in the "cloud" associated with its virtual machine.
If you want to host your RBS Server in your own office or data center, and have your endpoints send data directly to a cloud service instead of to your RBS Server, it can do that, too. When you build your Endpoint installers, turn ON "Cloud Services" in the Web Manager -> Setup -> Customize Endpoint Installers -> First Page -> Advanced Features.
After you turn this on (it is OFF by default) the Endpoint installers that you build will have the Cloud Service option available.
RBackup Endpoints send backups to cloud services through drivers provided by the cloud service, which map a local drive lettter or virtual folder to the cloud service account. Some cloud services do not provide these drivers. Google Drive does, and DropBox does. Others do, too. Check with your cloud service provider to see if they offer a driver. Cloud features change rapidly, so we can't list them all here.
There are also third party applications and drivers that can make "cloud" resources available as a local virtual device. TNTDrive is an example of this. It maps Amazon S3 buckets as local drives/folders.
SPECIAL NOTE ABOUT VIRUSES: Attaching a local computer to a cloud backup account can put your backups at risk!! If your cloud backup account can be accessed by Windows as a virtual device, viruses may be able to damage your cloud-based data store. For example, the Crypto Locker virus will encrypt all files on a computer that it can access, so if your cloud based backups can be accessed through the driver on your local computer, they may be vulnerable.
The procedure is to sign up for the cloud account and download their driver to the Endpoint computer. Install the driver, which will map a local drive letter or virtual folder to the cloud account. Then in the RBackup Endpoint, enable Cloud Services in the Schedule screen in the endpoint software. Depending on how you've set up your Endpoint features, you might have to use the admin override feature to access this.
Turn on the checkbox for Cloud Service and set the path to the virtual device using the Endpoint's Advanced Interface -> Options ->Cloud Backup Options.
By installing a driver on your RBS Server you can have your RBS Server store its data in a cloud service the same way the Endpoints can. Just point your server's Root Directory at the cloud service path. Backups will then come from your Endpoints, pass THROUGH your RBS Server and be stored remotely.
Support Coordinator, Steve