Patents by Inventor Masaya Suenaga
Masaya Suenaga 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).
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Patent number: 10956073Abstract: A management device includes: a determiner that, in a plurality of storage area pools each of that has a configuration including a plurality of storage devices, determines a storage area pool into that a spare storage device is incorporated for adding an area storing data; and a manager that incorporates the spare storage device into the determined storage area pool.Type: GrantFiled: January 18, 2018Date of Patent: March 23, 2021Assignee: NEC CORPORATIONInventor: Masaya Suenaga
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Patent number: 10324660Abstract: A control device 1 includes, as function units, a compression propriety determination unit 2 and a transfer unit 3. The compression propriety determination unit 2 determines whether to compress writing-target data based on a compression condition including an operating state of the device. The transfer unit 3 transfers data acquired by compressing the writing-target data to a storage storing data when it is determined to compress the writing-target data. The transfer unit 3 transfers the writing-target data to the storage without compressing when it is determined not to compress the writing-target data.Type: GrantFiled: March 10, 2017Date of Patent: June 18, 2019Assignee: NEC CORPORATIONInventor: Masaya Suenaga
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Patent number: 10162573Abstract: The present invention provides a storage management system that suppresses performance degradation due to Read-Modify-Write. The storage management system includes: a management unit managing a storage system including a first storage medium having a first physical sector size and an alternative storage medium having a second physical sector size smaller than the first physical sector size; an acceptance unit accepting a write request; and a disk processing control unit, when a write area identified by the write request is an area on the first storage medium and the start address or end address of the write area does not correspond to a boundary of a physical sector of the first storage medium, writing data identified by the write request on the alternative storage medium, notifying the host of completion of the write, and then transferring the data from the alternative storage medium to the first storage medium.Type: GrantFiled: September 24, 2014Date of Patent: December 25, 2018Assignee: NEC CORPORATIONInventor: Masaya Suenaga
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Publication number: 20180210672Abstract: A management device includes: a determiner that, in a plurality of storage area pools each of that has a configuration including a plurality of storage devices, determines a storage area pool into that a spare storage device is incorporated for adding an area storing data; and a manager that incorporates the spare storage device into the determined storage area pool.Type: ApplicationFiled: January 18, 2018Publication date: July 26, 2018Applicant: NEC CorporationInventor: Masaya SUENAGA
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Publication number: 20170285983Abstract: In some embodiments, a storage system may include, but is not limited to, a master volume, one or more link volumes, a master data read frequency determination unit, a load state determination unit, a copy target determination unit, a copy destination determination unit, and a copy controller. The copy target determination unit determines copy target data in the data stored in the master volume on the basis of the read frequency when the load state determination unit determines that the master volume is in a high load state. The copy destination determination unit determines at least one of the one or more link volumes as a copy destination link volume of the copy target data on the basis of the load state of each of the one or more link volumes. The copy controller copies the copy target data into the copy destination link volume.Type: ApplicationFiled: March 28, 2017Publication date: October 5, 2017Inventors: Takeshi MATSUBARA, Toshitaka NAKASHIMA, Yuji KANEKO, Kazunori TANOUE, Masaya SUENAGA, Kenichi MIKI, Fumio MAEHATA
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Publication number: 20170277475Abstract: A control device 1 includes, as function units, a compression propriety determination unit 2 and a transfer unit 3. The compression propriety determination unit 2 determines whether to compress writing-target data based on a compression condition including an operating state of the device. The transfer unit 3 transfers data acquired by compressing the writing-target data to a storage storing data when it is determined to compress the writing-target data. The transfer unit 3 transfers the writing-target data to the storage without compressing when it is determined not to compress the writing-target data.Type: ApplicationFiled: March 10, 2017Publication date: September 28, 2017Applicant: NEC CorporationInventor: Masaya SUENAGA
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Patent number: 9043611Abstract: A disk array device comprises a first storage unit that stores encrypted user data, a second storage unit that is different from the first storage unit and locks and stores configuration information including a first encrypted authentication key that unlocks the encrypted user data, a management unit that includes a decoder that decodes the first encrypted authentication key and a control unit that unlocks the locked configuration information using a second authentication key, the management unit managing data using the first and second authentication keys.Type: GrantFiled: February 28, 2013Date of Patent: May 26, 2015Assignee: NEC CORPORATIONInventors: Masaya Suenaga, Wataru Saitou
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Publication number: 20150089115Abstract: The present invention provides a storage management system that suppresses performance degradation due to Read-Modify-Write. The storage management system includes: a management unit managing a storage system including a first storage medium having a first physical sector size and an alternative storage medium having a second physical sector size smaller than the first physical sector size; an acceptance unit accepting a write request; and a disk processing control unit, when a write area identified by the write request is an area on the first storage medium and the start address or end address of the write area does not correspond to a boundary of a physical sector of the first storage medium, writing data identified by the write request on the alternative storage medium, notifying the host of completion of the write, and then transferring the data from the alternative storage medium to the first storage medium.Type: ApplicationFiled: September 24, 2014Publication date: March 26, 2015Inventor: Masaya SUENAGA
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Publication number: 20130227304Abstract: A disk array device comprises a first storage unit that stores encrypted user data, a second storage unit that is different from the first storage unit and locks and stores configuration information including a first encrypted authentication key that unlocks the encrypted user data, a management unit that includes a decoder that decodes the first encrypted authentication key and a control unit that unlocks the locked configuration information using a second authentication key, the management unit managing data using the first and second authentication keys.Type: ApplicationFiled: February 28, 2013Publication date: August 29, 2013Inventors: Masaya Suenaga, Wataru Saitou
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Patent number: 8433949Abstract: The invention provides a disk array apparatus and a physical disk restoration method for managing a used area and an unused area of a faulty physical disk and shortening the time required for the physical disk to become usable by an external unit. The disk array apparatus includes: a unit for determining whether block areas of the physical disk are used areas or unused areas; a unit for recovering data in relation to block areas determined to be used areas and writing the recovered data to block areas of a spare disk corresponding to the used areas; a unit for transmitting a notification that the physical disk is usable to a host apparatus when data recovery is completed; and a unit for writing zero data to block areas of the spare disk corresponding to block areas determined to be unused areas after transmitting the notification.Type: GrantFiled: July 21, 2010Date of Patent: April 30, 2013Assignee: NEC CorporationInventor: Masaya Suenaga
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Publication number: 20110202791Abstract: A storage control device and a storage control method are provided. If a first failure detector of a first controller does not detect a failure in a second controller, a first input/output processor of the first controller copies the contents of a first volatile memory of the first controller to a second volatile memory of the second controller. On the other hand, if the first failure detector detects a failure in the second controller, the first input/output processor copies the contents of the first volatile memory to a first non-volatile memory of the first controller.Type: ApplicationFiled: February 17, 2011Publication date: August 18, 2011Applicant: NEC CORPORATIONInventors: Wataru SAITOU, Masaya SUENAGA
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Publication number: 20110022889Abstract: The invention provides a disk array apparatus and a physical disk restoration method for managing a used area and an unused area of a faulty physical disk and shortening the time required for the physical disk to become usable by an external unit. The disk array apparatus includes: a unit for determining whether block areas of the physical disk are used areas or unused areas; a unit for recovering data in relation to block areas determined to be used areas and writing the recovered data to block areas of a spare disk corresponding to the used areas; a unit for transmitting a notification that the physical disk is usable to a host apparatus when data recovery is completed; and a unit for writing zero data to block areas of the spare disk corresponding to block areas determined to be unused areas after transmitting the notification.Type: ApplicationFiled: July 21, 2010Publication date: January 27, 2011Inventor: MASAYA SUENAGA
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Patent number: 7280485Abstract: Upon detection of a fault of a loop or any of disk apparatuses 30, 40, and 50, an FC-AL control unit 15 notifies an MPU11 of contents of the fault. The MPU11 records a fault history for each disk apparatus in a memory circuit 12 and also sets an order in which the disk apparatuses 30, 40, and 50 are to be disconnected, based on the fault histories. If the link fault occurs, the disk apparatuses 30, 40, and 50 are disconnected from the loop in thus set disconnecting order. If the link failure occurs on the port A side loop 1, a disk adapter 10 supplies a port bypassing-related instruction to its counterpart disk adapter 20 to thereby control bypassing/bypassing releasing on the port A side through the port B side loop 2.Type: GrantFiled: June 13, 2002Date of Patent: October 9, 2007Assignee: NEC CorporationInventor: Masaya Suenaga
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Publication number: 20020191537Abstract: Upon detection of a fault of a loop or any of disk apparatuses 30, 40, and 50, an FC-AL control unit 15 notifies an MPU11 of contents of the fault. The MPU11 records a fault history for each disk apparatus in a memory circuit 12 and also sets an order in which the disk apparatuses 30, 40, and 50 are to be disconnected, based on the fault histories. If the link fault occurs, the disk apparatuses 30, 40, and 50 are disconnected from the loop in thus set disconnecting order. If the link failure occurs on the port A side loop 1, a disk adapter 10 supplies a port bypassing-related instruction to its counterpart disk adapter 20 to thereby control bypassing/bypassing releasing on the port A side through the port B side loop 2.Type: ApplicationFiled: June 13, 2002Publication date: December 19, 2002Applicant: NEC CorporationInventor: Masaya Suenaga