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American Megatrends Assigned Patent

Data migration between multiple tiers in storage system using pivot tables

American Megatrends, Inc., Norcross, GA, has been assigned a patent (8,812,811) developed by four co-inventors for “data migration between multiple tiers in a storage system using pivot tables.”

The co-inventors are Paresh Chatterjee, Ajit Narayanan, Loganathan Ranganathan, Fremont, CA, and Sharon Enoch, Newark, CA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Technologies are described for implementing a migration mechanism in a data storage system containing multiple tiers of storage with each tier having different cost and performance parameters. Access statistics can be collected for each territory, or storage entity, within the storage system. Data that is accessed more frequently can be migrated toward higher performance storage tiers while data that is accessed less frequently can be migrated towards lower performance storage tiers. Each tier can be associated with a range of ILM statistics referred to as the bucket for that tier. A pivot table may be provided that relates the tiers and the buckets. Operations on the pivot table can provide counts of how many territories may be promoted or demoted between any two pairs of tiers.”

The patent application was filed on Aug. 10, 2012 (13/571,956).

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