US Patent 7636761 Measurement in data forwarding storage

Methods and apparatus, including computer program products, for measurement in data forwarding storage. A method includes, in a network of interconnected computer system nodes, receiving a request from a source system to store data, directing the data to a computer memory, storing information about the data in a store associated with a central server, and continuously forwarding the data and the store from one computer memory to another computer memory in the network of interconnected computer system nodes without storing on any physical storage device in the network.