Hybrid cloud

A hybrid cloud is a combination of the private and public cloud infrastructures, as shown in the following figure:

Many companies are choosing to keep a private cloud as the main infrastructure for security and performance reasons, while extending that into the public cloud using CloudBridge so that they have some sense of disaster recovery, failover, and extra capacity when they have a burst of data.

As an example, to implement a VDI solution in the cloud, it is possible to rent physical equipment from a colocation or COLO facility or directly from a cloud provider, such as SoftLayer or Rackspace. It is then possible to install XenServer and XenDesktop frontended by Citrix NetScaler Gateway and to use CloudBridge in order to bridge to a public cloud for high availability and disaster recovery. The network diagram for this type of solution would be strikingly similar to the one we reviewed in Chapter 10, Application Delivery. The network diagram to implement a VDI solution in...