Toshiba and Toshiba Digital Solutions Assigned Patent

Kabushiki Kaisa Toshiba, Minato-ku, Japan, and Toshiba Digital Solutions Corporation, Kawasaki-shi, Japan, has been assigned a patent (10,235,071) developed by Hasegawa, Tomofumi, Inagi, Japan, for “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 storage controller determines, when a range of an access request to a logical unit extends over some of logical extents in the logical unit, that these logical extents are correlated with each other. The storage controller transfers data of a set of the correlated logical extents as one extent group collectively in units of physical extents between the first storage device and the second storage device.”

The patent application was filed on March 8, 2017 (15/453,191).