Patents by Inventor Daiya Nakamura
Daiya Nakamura 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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Publication number: 20160004419Abstract: A monitoring device included a processor. The processor is configured to monitor a state of a first device. The processor is configured to receive an operation command input partway. The operation command is for operating the first device. The processor is configured to select, depending on the state of the first device, a prioritized completion candidate from among a plurality of completion candidates likely to be included in the operation command. The prioritized completion candidate is to be displayed in a display unit in priority to other completion candidates among the plurality of completion candidates. The processor is configured to output information regarding the prioritized completion candidate.Type: ApplicationFiled: May 28, 2015Publication date: January 7, 2016Applicant: Fujitsu LimitedInventors: Daiya Nakamura, Mihoko Maeda, Jiyu Kushihara
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Patent number: 8898512Abstract: A storage system includes plural storage devices, a controller configured to transmit an access request for controlling an access to at least one of the storage devices, a switching part configured to receive the access request from the controller to select the one of the storage devices based on the access request received from the controller, and a proxy response part configured to transmit, if the selected storage device has failed, a response to the access request instead of the failed storage device responding.Type: GrantFiled: May 26, 2011Date of Patent: November 25, 2014Assignee: Fujitsu LimitedInventor: Daiya Nakamura
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Publication number: 20140317444Abstract: A storage control device includes a processor. The processor is configured to monitor driving states of each of a plurality of storage drives included in a storage device. The processor is configured to rearrange data stored in the storage drives so that the driving states of the storage drives are uniformed.Type: ApplicationFiled: February 26, 2014Publication date: October 23, 2014Applicant: FUJITSU LIMITEDInventors: Jiyu KUSHIHARA, Daiya Nakamura, Kazuma Takatsu
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Patent number: 8631211Abstract: According to an aspect of an embodiment, a disk drive diagnosis apparatus is included in a RAID system in which a RAID control unit and a drive enclosure that encloses a disk drive are interconnected via a fabric switch. The apparatus comprises a virtual login processing unit configured to virtually execute a login process for a fabric switch of a disk drive and a control unit configured to notify the RAID control unit of a result of the virtual login process and disconnect from a connection line for the RAID control unit a disk drive that has not normally performed the virtual login process relative to the drive enclosure.Type: GrantFiled: December 27, 2007Date of Patent: January 14, 2014Assignee: Fujitsu LimitedInventors: Atsuhiro Otaka, Daiya Nakamura, Hidetoshi Satou
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Patent number: 8451019Abstract: A method of detecting a failure in an information processing apparatus is provided. The method includes detecting at least one of a power supply failure and a unit failure, monitoring the detected unit failures, and determining a detected unit failure for a first unit is erroneous if the monitoring indicates another of the units receiving power from a same power supply system as the first unit has also detected a unit failure. The power supply failure indicates a failure associated with a power supply system affecting more than one of the units, and the unit failure indicates a failure of one of the units.Type: GrantFiled: July 29, 2010Date of Patent: May 28, 2013Assignee: Fujitsu LimitedInventor: Daiya Nakamura
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Patent number: 8429462Abstract: A storage system has a controller and a plurality of storage devices connected to a pair of loops, the controller diagnoses storage devices and performs automatic high-speed restoration of the loops. A storage system has a controller, a plurality of storage devices, and switch circuits having a plurality of switches to connect each of the plurality of storage devices to loops. When a loop anomaly is detected, a restoration instruction is issued to a switch circuit, the plurality of switches are operated in parallel, storage devices are diagnosed, and according to the diagnosis results, a storage device judged to be anomalous are bypassed from the loop by operating the switches. When a loop anomaly is detected, diagnosis of the disk drives connected to the loop can be performed in parallel, so that the time until automatic restoration of the loop can be greatly reduced.Type: GrantFiled: September 25, 2006Date of Patent: April 23, 2013Assignee: Fujitsu LimitedInventors: Kazuo Nakashima, Daiya Nakamura, Kouichi Tukada, Atsushi Ishii
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Publication number: 20120042203Abstract: A storage system includes plural storage devices, a controller configured to transmit an access request for controlling an access to at least one of the storage devices, a switching part configured to receive the access request from the controller to select the one of the storage devices based on the access request received from the controller, and a proxy response part configured to transmit, if the selected storage device has failed, a response to the access request instead of the failed storage device responding.Type: ApplicationFiled: May 26, 2011Publication date: February 16, 2012Applicant: FUJITSU LIMITEDInventor: Daiya NAKAMURA
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Publication number: 20110187404Abstract: A method of detecting a failure in an information processing apparatus is provided. The method includes detecting at least one of a power supply failure and a unit failure, monitoring the detected unit failures, and determining a detected unit failure for a first unit is erroneous if the monitoring indicates another of the units receiving power from a same power supply system as the first unit has also detected a unit failure. The power supply failure indicates a failure associated with a power supply system affecting more than one of the units, and the unit failure indicates a failure of one of the units.Type: ApplicationFiled: July 29, 2010Publication date: August 4, 2011Applicant: FUJITSU LIMITEDInventor: Daiya Nakamura
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Patent number: 7797567Abstract: The storage apparatus includes a plurality of storage devices for storing information, a control unit controlling the storage device, a switching unit switching a connection between the storage device and the control unit, and a network different from the connection by the switching unit and connecting the storage device and the control unit. Reading of information from the storage device and writing of information into the storage device is performed by the control unit through the switching unit, and when a fault occurs in the storage device, a fault recovery command is sent from the control unit through the network to the corresponding storage device or the switching unit.Type: GrantFiled: August 24, 2006Date of Patent: September 14, 2010Assignee: Fujitsu LimitedInventors: Atsuhiro Otaka, Daiya Nakamura, Omar Thielo, Nobuyuki Honjo
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Publication number: 20080215809Abstract: According to an aspect of an embodiment, a disk drive diagnosis apparatus is included in a RAID system in which a RAID control unit and a drive enclosure that encloses a disk drive are interconnected via a fabric switch. The apparatus comprises a virtual login processing unit configured to virtually execute a login process for a fabric switch of a disk drive and a control unit configured to notify the RAID control unit of a result of the virtual login process and disconnect from a connection line for the RAID control unit a disk drive that has not normally performed the virtual login process relative to the drive enclosure.Type: ApplicationFiled: December 27, 2007Publication date: September 4, 2008Applicant: Fujitsu LimitedInventors: Atsuhiro Otaka, Daiya Nakamura, Hidetoshi Satou
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Patent number: 7421538Abstract: A storage control apparatus controls physical disks according to the host access using a pair of controllers, while mirroring processing is decreased when data is written to a cache memory and high-speed operation is enabled. The mirror management table is created with allocating the mirror area of the cache memory of the other controller, and acquisition of a mirror page of the cache memory of the other controller is executed referring to the mirror management table without an exchange of mirror page acquisition messages between the controllers.Type: GrantFiled: November 19, 2003Date of Patent: September 2, 2008Assignee: Fujitsu LimitedInventors: Joichi Bita, Daiya Nakamura
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Publication number: 20080140931Abstract: A disk enclosure issues various small computer system interface (SCSI) commands to hard disk drives (HDDs), and acquires and stores therein disk detail data on all the HDDs. A disk controller is connected to the disk enclosure via an exclusive SCSI cable and the disk controller issues the SCSI command for requesting the disk detail data in batch. Upon receiving the SCSI command, the disk enclosure returns the disk detail data on all the HDDs in batch, in response to the SCSI command.Type: ApplicationFiled: September 27, 2007Publication date: June 12, 2008Applicant: FUJITSU LIMITEDInventors: Daiya Nakamura, Atsuhiro Otaka, Hidetoshi Satou
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Publication number: 20080010547Abstract: A storage system has a controller and a plurality of storage devices connected to a pair of loops, the controller diagnoses storage devices and performs automatic high-speed restoration of the loops. A storage system has a controller, a plurality of storage devices, and switch circuits having a plurality of switches to connect each of the plurality of storage devices to loops. When a loop anomaly is detected, a restoration instruction is issued to a switch circuit, the plurality of switches are operated in parallel, storage devices are diagnosed, and according to the diagnosis results, a storage device judged to be anomalous are bypassed from the loop by operating the switches. When a loop anomaly is detected, diagnosis of the disk drives connected to the loop can be performed in parallel, so that the time until automatic restoration of the loop can be greatly reduced.Type: ApplicationFiled: September 25, 2006Publication date: January 10, 2008Applicant: FUJITSU LIMITEDInventors: Kazuo Nakashima, Daiya Nakamura, Kouichi Tukada, Atsushi Ishii
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Publication number: 20070253232Abstract: The storage apparatus includes a plurality of storage devices for storing information, a control unit controlling the storage device, a switching unit switching a connection between the storage device and the control unit, and a network different from the connection by the switching unit and connecting the storage device and the control unit. Reading of information from the storage device and writing of information into the storage device is performed by the control unit through the switching unit, and when a fault occurs in the storage device, a fault recovery command is sent from the control unit through the network to the corresponding storage device or the switching unit.Type: ApplicationFiled: August 24, 2006Publication date: November 1, 2007Applicant: FUJITSU LIMITEDInventors: Atsuhiro Otaka, Daiya Nakamura, Omar Thielo, Nobuyuki Honjo
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Publication number: 20060274646Abstract: An apparatus for managing a network connection between different types of networks via a master port includes a failure detecting unit and a master-port switching unit. The failure detecting unit detects a failure in other apparatus based on a frame for determining the master port transmitted from the other apparatus. The master-port switching unit switches, when the failure detecting unit detects a failure in the other apparatus, the master port of the apparatus from a standby state to an operation state.Type: ApplicationFiled: September 29, 2005Publication date: December 7, 2006Applicant: Fujitsu LimitedInventors: Daiya Nakamura, Atsuhiro Otaka, Oumar Thielo
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Publication number: 20060212228Abstract: A device for setting identification information for identifying an intermediary device mounted on a substrate, the device includes an information acquiring unit that acquires position information indicating a position at which the intermediary device is mounted; and an information setting unit that sets the identification information based on the position information.Type: ApplicationFiled: June 29, 2005Publication date: September 21, 2006Applicant: FUJITSU LIMITEDInventors: Atsuhiro Otaka, Daiya Nakamura, Oumar Thielo
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Publication number: 20040103247Abstract: A storage control apparatus controls physical disks according to the host access using a pair of controllers, while mirroring processing is decreased when data is written to a cache memory and high-speed operation is enabled. The mirror management table is created with allocating the mirror area of the cache memory of the other controller, and acquisition of a mirror page of the cache memory of the other controller is executed referring to the mirror management table without an exchange of mirror page acquisition messages between the controllers.Type: ApplicationFiled: November 19, 2003Publication date: May 27, 2004Applicant: FUJITSU LIMITEDInventors: Joichi Bita, Daiya Nakamura