Hewlett-Packard Development Company, L.p.

John Dimitroff

Minh Chau Alvin Nguyen

David L Grant

Robert S Gready

Raymond A Ritter

Eugene E Freeman

Gary L Phillips

A computer network has several machines, including machines having storage systems, and communication resources for communicating between the machines. A metadata registry having information about data stored on the network is distributed on two or more machines of the network, and local copies of part of this metadata registry reside on a compute machine of the network. The metadata registry has a command object that comprises network address information about at least some of the machines of the computer network that participate in a first communication. An agent monitors communications between the machines of the computer network for communications relevant to the command object, the agent modifies the command object by adding network address information of additional machines of the computer network that should participate in the first communication between said machines to maintain coherency of the metadata registry and local copies thereof.

System and method for managing data flow and measuring service in a storage network

A computer system and storage management method for routing data between peer-level storage units. The computer system includes a first storage unit (e.g., disk drive) and an intelligent controller connected to a storage area network. The intelligent controller is also connected to a second storage unit (e.g., tape drive). The computer system further includes a host (server and/or workstation) having an application module for generating and transmitting a command to the intelligent controller by way of the storage area network or a system network. In response to the transmitted command, the intelligent controller routes data between the first storage unit and the second storage unit using the storage area network while bypassing the host.

Computer system and method for transferring data between multiple peer-level storage units

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Houston, TX, United States of America

John Dimitroff