Importance

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Abstract

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.

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First Claim