NTT Assigned Patent

Nippon Telegraph and Telephone Corp. (NTT), Tokyo, Japan, has been assigned a patent (11,016,707) developed by Koyama, Takaaki, Musashino, Japan, for “control device, control method, and recording medium to detect a state of access to table data and set a writing destination.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A control device according to the present invention includes: a memory, and processing circuitry coupled to the memory and configured to: detect a state of access to table data stored in a first logical disk of a physical disk and to which first data is written and a state of access to a write ahead log (WAL) stored in a second logical disk of the physical disk and to which second data is written or to a WAL stored in a second storage medium different from the physical disk and to which the second data is written, and acquire an I/O use ratio of the WAL and an I/O use ratio of the table data, and set a writing destination of the second data to one of the WAL stored in the second logical disk and the WAL stored in the second storage medium.”

The patent application was filed on June 5, 2018 (Appl. No.16/618,799).