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Zettaset Assigned Patent

Distributed storage medium management for heterogeneous storage media in high availability clusters

Zettaset, Inc., Mountain View, CA, has been assigned a patent (9,063,939) developed by Dalton, Michael W., San Francisco, CA, for a distributed storage medium management for heterogeneous storage media in high availability clusters.

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A high availability cluster and method of storage medium management in such high availability cluster. A number k of nodes belonging to the cluster, where k.gtoreq.2 and includes a master node, are provisioned with high-access-rate and low-access-rate storage media. A file is written to the high-access-rate medium of a serving node selected from among k-1 nodes excluding the master node. The file is also written to low-access-rate medium of each of k-2 nodes excluding the master node and the serving node. A distributed storage medium management protocol supervises file migration from the low-access-rate medium of a back-up node to the high-access-rate medium of the back-up node upon disruption of file availability on the serving node. File rebalancing relies on parameters including popularity, write- and read-requests, capacity, processing load or cost.

The patent application was filed on November 3, 2011 (13/373,142).

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