Hewlett-packard Development Company, L.p.

Nicos A Vekiarides

John W Bates

A method, system, and computer program product for mirroring data in a computer network is described. At least one connection is established between a local storage server and a mirror storage server. A primary storage request is received from a network host at the local storage server. A mirror storage request is sent across the established at least one connection from the local storage server, wherein the mirror storage request corresponds to the received primary storage request. The mirror storage request is processed at the mirror storage server. A first heartbeat signal is sent from the local storage server to the mirror storage server. A second heartbeat signal is sent from the mirror storage server to the local storage server. Data of the received mirror storage request is stored in a mirror storage device corresponding to a primary storage device. A response is sent across the established at least one connection from the mirror storage server, wherein the response indicates whether the storing of data of the received mirror storage request step was successful. An interruption may be detected in the second heartbeat signal at the local storage server. The established at least one connection is closed. Mirror storage requests are queued. The second heartbeat signal is received at the local storage server after the detected interruption of the second heartbeat signal. The closed at least one connection is re-established. The queued mirror storage requests are sent across the re-established at least one connection after the re-establishing step.

Internet protocol data mirroring

A system for allocating storage resources in a storage area network is described. A logical unit number (LUN) mapper receives at least one storage request parameter and maps the storage request parameters to at least one physical LUN. The LUN mapper includes at least one LUN map. The storage request parameters include a host id parameter, a target LUN parameter, and a target host bus adaptor (HBA) parameter. The LUN mapper uses the host id parameter to select the one of the LUN maps that corresponds to the host id parameter. The LUN mapper applies the target LUN parameter and the target HBA parameter to the selected LUN map to locate the physical LUN(s) stored in the selected LUN map. The LUN mapper issues the received read/write storage request to at least one storage device that houses the physical LUN(s). The one or more storage devices are located in the storage area network.

Method and system of allocating storage resources in a storage area network

A method, system, and computer program product for a data propagation platform and applications of same is described. The data propagation platform provides various storage functions. According to an embodiment, the factories of the data propagation platform create and implement device modules. Device modules perform operations on encapsulated messages formed from data and commands, such as device operation commands and data from storage device read/write operations. Device modules are formed into device chains. Device chains are able to perform various tasks as a sum of device modules. In embodiments, device chains are layered and built on each other.

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Dedham, MA, United States of America

Nicos A Vekiarides