Toshiba Corp. and Toshiba Solutions Assigned Patent

Kabushiki Kaisha Toshiba, Minato-ku, Japan, and Toshiba Solutions Corporation, Kawasaki-shi, Japan, has been assigned a patent (9,891,828) developed by Hasegawa, Tomofumi, Inagi, Japan, for a “tiered storage system, storage controller, and tiering control method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a tiered storage system includes a first storage device, a second storage device and a storage controller. The first and second storage devices are positioned as an upper tier and a lower tier, respectively. The storage controller transfers data of q physical extents in the second storage device to q free physical extents in the first storage device, when an access request from a host computer designates access to one or more logical blocks including a first logical block, the first logical block is included in a first logical extent, and the first logical extent belongs to an extent group including q logical extents to which the q physical extents are allocated.”

The patent application was filed on July 11, 2016 (15/206,412).