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AssigneeInternational Business Machines Corporation
InventorsKenneth Wayne Boyd, Kenneth Fairclough Day, III, Philip Matthew Doatmas, John Jay Wolfgang
Estimating the term…
A network component useful in tracking write activity by writing logs containing write address information is described. The tracking component may be used in networked systems employing data mirrors to record data block addresses written to a primary storage volume during the time a data mirror is unavailable. The tracking component can be available to any network originating node, and may therefore track write activity on multiple volumes. At the time a data mirror is reconstructed, the log written may be used to construct a list of block addresses pointing to locations on a primary storage volume wherein data differs from a secondary storage volume member of the mirror. The locations maybe copied from the primary to secondary storage volume to reconstruct the data mirror. The performance impact of the tracking component is minimal and a shared network resource is offered that increases fault tolerance in the event of backup device failures.
A method for logging block address information, the method comprising:
A computer readable storage medium embodying one or more instructions stored on a storage device and executable by a processor to perform a method for logging block address information, the method comprising:
Dependencies are inferred from the claim text.