ALEXANDRIA, Va., July 23 -- United States Patent no. 12,367,115, issued on July 22, was assigned to HITACHI VANTARA LTD. (Yokohama, Japan).

"Storage system" was invented by Yoshihiro Yoshii (Tokyo), Tomohiro Yoshihara (Tokyo) and Ryosuke Tatsumi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Each controller of a plurality of storage controllers is an old storage controller before replacement or a new storage controller after replacement. The new storage controller can execute a first program and a second program, and the old storage controller can execute at least the second program. When all of the plurality of storage controllers are the new storage controller, the new storage controller processes d...