EDB Ark can create and manage cloud clusters that reside on Amazon-hosted virtual private networks. A virtual private cloud (VPC) is similar in structure to a traditional network, but provides the scalability and ease of maintenance offered by cloud computing.A VPC is an isolated network with a unique IP address range and subnet address (or addresses). When you use the Ark console to create a cloud instance within a VPC, you specify the ID of the private cloud, and Ark assigns the new instance an IP address from within your private network.To create a new cluster that resides on a VPC, log into the Ark console and click the Launch DB Cluster button. When the Create a new Server Cluster dialog opens (as shown in Figure 2.5), provide details about the cluster configuration. Use the VPC drop-down menu to select an existing VPC, or choose New VPC to create a new virtual private cloud into which the cluster will be deployed. EDB Ark will create the new instance on a virtual machine in the specified VPC network.