Patents by Inventor Mamoru Motonaga
Mamoru Motonaga has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9710168Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are couples to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: GrantFiled: December 14, 2015Date of Patent: July 18, 2017Assignee: Hitachi, Ltd.Inventors: Mamoru Motonaga, Takashi Chikusa, Takashi Nozawa, Yuko Matsui, Megumi Hokazono
-
Publication number: 20160098196Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are couples to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Inventors: Mamoru MOTONAGA, Takashi CHIKUSA, Takashi NOZAWA, Yuko MATSUI, Megumi HOKAZONO
-
Patent number: 9223508Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are couples to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: GrantFiled: February 18, 2015Date of Patent: December 29, 2015Assignee: Hitachi, Ltd.Inventors: Mamoru Motonaga, Takashi Chikusa, Takashi Nozawa, Yuko Matsui, Megumi Hokazono
-
Patent number: 9086807Abstract: A storage apparatus and tier control method capable of executing hierarchical control based on variable performance of SSDs are suggested. With a storage apparatus equipped with a plurality of drives composed of flash memories, the storage apparatus includes a controller for hierarchically controlling storage areas provided by the plurality of drives by classifying the storage areas into a plurality of tiers with different performances and managing them, wherein the controller: decides a first tier, to which each of the drives should belong, based on performance of the drive; decides to change the tier, to which the drive should belong, from the first tier to a second tier different from the first tier based on the drive's performance, which varies depending on property of the drive; and changes the tier, to which the drive determined to change its tier should belong, from the first tier to the second tier.Type: GrantFiled: August 26, 2013Date of Patent: July 21, 2015Assignee: Hitachi, Ltd.Inventors: Gosuke Okada, Takashi Chikusa, Keiichiro Uchida, Megumi Hokazono, Naoto Shiino, Mamoru Motonaga
-
Publication number: 20150160875Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are couples to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: ApplicationFiled: February 18, 2015Publication date: June 11, 2015Inventors: Mamoru MOTONAGA, Takashi CHIKUSA, Takashi NOZAWA, Yuko MATSUI, Megumi HOKAZONO
-
Publication number: 20150160858Abstract: A storage apparatus and tier control method capable of executing hierarchical control based on variable performance of SSDs are suggested. With a storage apparatus equipped with a plurality of drives composed of flash memories, the storage apparatus includes a controller for hierarchically controlling storage areas provided by the plurality of drives by classifying the storage areas into a plurality of tiers with different performances and managing them, wherein the controller: decides a first tier, to which each of the drives should belong, based on performance of the drive; decides to change the tier, to which the drive should belong, from the first tier to a second tier different from the first tier based on the drive's performance, which varies depending on property of the drive; and changes the tier, to which the drive determined to change its tier should belong, from the first tier to the second tier.Type: ApplicationFiled: August 26, 2013Publication date: June 11, 2015Inventors: Gosuke Okada, Takashi Chikusa, Keiichiro Uchida, Megumi Hokazono, Naoto Shiino, Mamoru Motonaga
-
Patent number: 8966174Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are coupled to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: GrantFiled: December 31, 2012Date of Patent: February 24, 2015Assignee: Hitachi, Ltd.Inventors: Mamoru Motonaga, Takashi Chikusa, Takashi Nozawa, Yuko Matsui, Megumi Hokazono
-
Patent number: 8489937Abstract: In storage subsystems, due to the significant increase in HDD capacity, the time for executing online verification is elongated, affecting accesses from the host computer. By comprehending the status of accesses to the HDD, the sections where error has occurred and the status of restoration thereof, it becomes possible to detect defective or error sections efficiently at an early stage, according to which the reliability and access performance of the storage subsystem can be improved. The present storage subsystem executes one or more of the following processes: (M1) intensive verification of a circumference of an error LBA, (M2) an area-based prioritized verification, and (M3) continuous verification performed for a long period of time to (V1) an area in which error has occurred via IO access, (V2) a highly accessed area, and (V3) during a period of time when IO access is low.Type: GrantFiled: December 6, 2011Date of Patent: July 16, 2013Assignee: Hitachi, Ltd.Inventors: Gosuke Okada, Takashi Yamazaki, Mamoru Motonaga, Naoto Shiino, Takashi Nozawa, Megumi Hokazono
-
Publication number: 20130145223Abstract: In storage subsystems, due to the significant increase in HDD capacity, the time for executing online verification is elongated, affecting accesses from the host computer. By comprehending the status of accesses to the HDD, the sections where error has occurred and the status of restoration thereof, it becomes possible to detect defective or error sections efficiently at an early stage, according to which the reliability and access performance of the storage subsystem can be improved. The present storage subsystem executes one or more of the following processes: (M1) intensive verification of a circumference of an error LBA, (M2) an area-based prioritized verification, and (M3) continuous verification performed for a long period of time to (V1) an area in which error has occurred via IO access, (V2) a highly accessed area, and (V3) during a period of time when IO access is low.Type: ApplicationFiled: December 6, 2011Publication date: June 6, 2013Inventors: Gosuke Okada, Takashi Yamazaki, Mamoru Motonaga, Naoto Shiino, Takashi Nozawa, Megumi Hokazono
-
Patent number: 8370570Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are coupled to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: GrantFiled: December 19, 2008Date of Patent: February 5, 2013Assignee: Hitachi, Ltd.Inventors: Mamoru Motonaga, Takashi Chikusa, Takashi Nozawa, Yuko Matsui, Megumi Hokazono
-
Publication number: 20100088469Abstract: Disclosed is a storage system that suppress occurrence of a bottleneck in the storage system, efficiently uses a bandwidth of hardware, and achieves high reliability. A storage system includes a storage apparatus that stores data, a controller that controls data input/output with respect to the storage apparatus, and an interface that couples the storage apparatus and the controller. The storage apparatus has a plurality of physical ports that are coupled to the interface. The controller logically partitions a storage area of the storage apparatus into a plurality of storage areas and provides the plurality of storage areas, or allocates the plurality of physical ports to the logically partitioned storage areas.Type: ApplicationFiled: December 19, 2008Publication date: April 8, 2010Inventors: Mamoru Motonaga, Takashi Chikusa, Takashi Nozawa, Yuko Matsui, Megumi Hokazono