A method and apparatus for generating a description of a configuration of a network that includes a plurality of devices is disclosed. Input is received that specifies the resource devices for the network. The input values are processed with a set of data according to one or more rules to determine the plurality of devices for the network, which includes one or more control devices and may include a set of storage equipment. The plurality of devices is determined without using a set of predetermined descriptions for the devices to be included in the network. An additional value that changes one or more of the input values is received, and in response to the receipt of the additional value, the plurality of devices for the network is modified. The modification is made without requiring additional input. Based on the modified plurality of devices, the description of the network is generated.