Toshiba Corp and Toshiba Solutions Corporation Assigned Patent

Kabushiki Kaisha Toshiba,Minato-ku, Japan, and Toshiba Solutions Corporation, Kawasaki-shi, Japan, has been assigned a patent (10,037,161) developed by Imaeda, Takaaki, Musashino, Japan, for a “tiered storage system, storage controller, and method for deduplication and storage tiering.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a deduplication controller in a tiered storage system excludes data duplication physical chunk by physical chunk. Based on the input/output statistics of logical chunks, a tiering controller in the system acquires the input/output statistics of physical chunks, each of which is allocated to one or more of the logical chunks. Based on the input/output statistics of the physical chunks, the tiering controller further executes at least an operation of relocating the data of a physical chunk in a first storage device to a physical chunk in a second storage device that is lower in access speed, or an operation of relocating the data of a physical chunk in the second storage device to a physical chunk in the first storage device.”

The patent application was filed on February 17, 2016 (15/046,002).