Patent ID: 6763436
Filing Date: 2004-07-13
Classification: G06F

Abstract:
A host element for use in a redundant data system which comprises a host computer, at least one said host element associated with and connected to said host computer, a plurality of storage devices, and an interconnecting computer network, the host element comprising:interface means for receiving read and write requests from the host computer; means for assigning consecutive sequence numbers to consecutively received write requests; means for sending a received request to at least a subset of the storage devices over the computer network, the sequence number assigned to each write request being sent to the at least a subset of storage devices with each request; means for receiving an indication that a storage device does not have up-to-date data; and means for sending that storage device the identity of another of the plurality of storage devices from which data recovery should be made, wherein data recovery from the other storage device is directly made without transiting through the host element.