Patents by Inventor Hisao Homma
Hisao Homma 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: 8918551Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: GrantFiled: November 26, 2013Date of Patent: December 23, 2014Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Serizawa, Yasutomo Yamamoto, Norio Shimozono, Akira Deguchi, Hisaharu Takeuchi, Takao Sato, Hisao Homma
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Patent number: 8832397Abstract: Availability of an information system including a storage apparatus and a host computer is improved. A host system includes a first storage apparatus provided with a first volume for storing data, and a second storage apparatus for storing the data sent from the first storage apparatus. In case of a failure occurring in the first storage apparatus, the host sends the data to be sent to the first storage apparatus to the second storage apparatus.Type: GrantFiled: August 2, 2012Date of Patent: September 9, 2014Assignee: Hitachi, Ltd.Inventors: Takashige Iwamura, Kenta Ninose, Yoshiaki Eguchi, Yasuo Watanabe, Hisao Homma, Yasutomo Yamamoto
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Publication number: 20140237179Abstract: Availability of an information system including a storage apparatus and a host computer is improved. A host system includes a first storage apparatus provided with a first volume for storing data, and a second storage apparatus for storing the data sent from the first storage apparatus. In case of a failure occurring in the first storage apparatus, the host sends the data to be sent to the first storage apparatus to the second storage apparatus. The same identification number is used by the host computer for accessing data stored in the first volume via a first virtual volume and for accessing data stored in a second volume of the second storage system via a second virtual volume.Type: ApplicationFiled: April 25, 2014Publication date: August 21, 2014Applicant: HITACHI, LTD.Inventors: Takashige Iwamura, Kenta Ninose, Yoshiaki Eguchi, Yasuo Watanabe, Hisao Homma, Yasutomo Yamamoto
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Publication number: 20140082229Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: ApplicationFiled: November 26, 2013Publication date: March 20, 2014Applicant: HITACHI, LTD.Inventors: Kazuyoshi SERIZAWA, Yasutomo YAMAMOTO, Norio SHIMOZONO, Akira DEGUCHI, Hisaharu TAKEUCHI, Takao SATO, Hisao HOMMA
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Patent number: 8621119Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: GrantFiled: January 14, 2013Date of Patent: December 31, 2013Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Serizawa, Yasutomo Yamamoto, Norio Shimozono, Akira Deguchi, Hisaharu Takeuchi, Takao Sato, Hisao Homma
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Patent number: 8595453Abstract: Availability of an information system including a storage apparatus and a host computer is improved. A host system includes a first storage apparatus provided with a first volume for storing data, and a second storage apparatus for storing the data sent from the first storage apparatus. In case of a failure occurring in the first storage apparatus, the host sends the data to be sent to the first storage apparatus to the second storage apparatus.Type: GrantFiled: September 6, 2007Date of Patent: November 26, 2013Assignee: Hitachi, Ltd.Inventors: Takashige Iwamura, Kenta Ninose, Yoshiaki Eguchi, Yasuo Watanabe, Hisao Homma, Yasutomo Yamamoto
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Patent number: 8386839Abstract: Availability of an information system including a storage apparatus and a computer is improved. First and second storage apparatuses execute remote copy of copying data written into a first primary volume from the computer to a second primary volume, at least one of the first and second storage apparatuses executes local copy of copying the data written into the first or second primary volume in a self-storage apparatus to the corresponding first or second secondary volume, and the computer switches the destination of a write request of the data from the first storage apparatus to the second storage apparatus in case of a failure occurring in the first storage apparatus.Type: GrantFiled: August 15, 2011Date of Patent: February 26, 2013Assignee: Hitachi, Ltd.Inventors: Yasuo Watanabe, Yasutomo Yamamoto, Kenta Ninose, Yoshiaki Eguchi, Takashige Iwamura, Hisao Homma
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Patent number: 8380893Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: GrantFiled: February 27, 2012Date of Patent: February 19, 2013Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Serizawa, Yasutomo Yamamoto, Norio Shimozono, Akira Deguchi, Hisaharu Takeuchi, Takao Sato, Hisao Homma
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Publication number: 20120297157Abstract: Availability of an information system including a storage apparatus and a host computer is improved. A host system includes a first storage apparatus provided with a first volume for storing data, and a second storage apparatus for storing the data sent from the first storage apparatus. In case of a failure occurring in the first storage apparatus, the host sends the data to be sent to the first storage apparatus to the second storage apparatus.Type: ApplicationFiled: August 2, 2012Publication date: November 22, 2012Inventors: Takashige IWAMURA, Kenta Ninose, Yoshiaki Eguchi, Yasuo Watanabe, Hisao Homma, Yasutomo Yamamoto
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Patent number: 8281179Abstract: Availability of an information system including a storage system that performs remote copy between two or more storage apparatuses and a host computer using such storage system is improved. A third storage apparatus including a third volume is coupled to a first storage apparatus, a fourth storage apparatus including a fourth volume is coupled to a second storage apparatus, the first and third storage apparatuses perform remote copy of copying data stored in a first volume to the third volume, the first and second storage apparatuses perform remote copy of copying data stored in the first volume to a second volume, and the third and fourth storage apparatuses perform remote copy of copying data stored in the third volume to the fourth volume.Type: GrantFiled: March 3, 2011Date of Patent: October 2, 2012Assignee: Hitachi, Ltd.Inventors: Hiroaki Akutsu, Takashige Iwamura, Kenta Ninose, Yasuo Watanabe, Yasutomo Yamamoto, Yoshiaki Eguchi, Hisao Homma
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Publication number: 20120159012Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: ApplicationFiled: February 27, 2012Publication date: June 21, 2012Applicant: HITACHI, LTD.Inventors: Kazuyoshi SERIZAWA, Yasutomo YAMAMOTO, Norio SHIMOZONO, Akira DEGUCHI, Hisaharu TAKEUCHI, Takao SATO, Hisao HOMMA
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Patent number: 8151013Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: GrantFiled: February 15, 2011Date of Patent: April 3, 2012Assignee: Hitachi, Ltd.Inventors: Kazuyoshi Serizawa, Yasutomo Yamamoto, Norio Shimozono, Akira Deguchi, Hisaharu Takeuchi, Takao Sato, Hisao Homma
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Patent number: 8090979Abstract: Availability of an information system including a storage apparatus and a computer is improved. First and second storage apparatuses execute remote copy of copying data written into a first primary volume from the computer to a second primary volume, at least one of the first and second storage apparatuses executes local copy of copying the data written into the first or second primary volume in a self-storage apparatus to the corresponding first or second secondary volume, and the computer switches the destination of a write request of the data from the first storage apparatus to the second storage apparatus in case of a failure occurring in the first storage apparatus.Type: GrantFiled: August 16, 2010Date of Patent: January 3, 2012Assignee: Hitachi, Ltd.Inventors: Yasuo Watanabe, Yasutomo Yamamoto, Kenta Ninose, Yoshiaki Eguchi, Takashige Iwamura, Hisao Homma
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Publication number: 20110302447Abstract: Availability of an information system including a storage apparatus and a computer is improved. First and second storage apparatuses execute remote copy of copying data written into a first primary volume from the computer to a second primary volume, at least one of the first and second storage apparatuses executes local copy of copying the data written into the first or second primary volume in a self-storage apparatus to the corresponding first or second secondary volume, and the computer switches the destination of a write request of the data from the first storage apparatus to the second storage apparatus in case of a failure occurring in the first storage apparatus.Type: ApplicationFiled: August 15, 2011Publication date: December 8, 2011Inventors: Yasuo WATANABE, Yasutomo YAMAMOTO, Kenta NINOSE, Yoshiaki EGUCHI, Takashige IWAMURA, Hisao HOMMA
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Patent number: 8046549Abstract: In the storage controller of the present invention, different difference bitmaps are used for predetermined sections respectively, whereby the difference between the primary volume and the base volume is managed for each section, and the data are protected efficiently. The difference between the primary volume and the base volume is managed by using the difference bitmaps that are different for the respective sections. The journal data after a lapse of the targeted protection period are written to the base volume and then discarded. At the time of recovery, the difference bitmaps are merged to create a new difference bitmap, and the difference is copied from the base volume to the primary volume. Thereafter, the journal data up to the designated restoration point are written to the primary volume.Type: GrantFiled: January 14, 2008Date of Patent: October 25, 2011Assignee: Hitachi, Ltd.Inventors: Shunji Kawamura, Hisao Homma
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Patent number: 7987329Abstract: A storage system is utilized to its fullest storage capacity by setting a write inhibitive attribute to a desired storage area of the storage system. The storage system has a logical volume in which data is stored and a control device which controls access to the data stored in the logical volume. A first area of a desired size is set in the logical volume, and an access control attribute is set to the first area. In response to a request made by a computer to perform access to the logical volume, the control device notifies the computer that the control device does not perform the access when an area designated by the access request contains at least a part of the first area and the access control attribute set to the first area inhibits the type of the access requested.Type: GrantFiled: December 2, 2008Date of Patent: July 26, 2011Assignee: Hitachi, Ltd.Inventors: Shunji Kawamura, Hisao Homma, Yasuyuki Nagasoe
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Publication number: 20110154102Abstract: Availability of an information system including a storage system that performs remote copy between two or more storage apparatuses and a host computer using such storage system is improved. A third storage apparatus including a third volume is coupled to a first storage apparatus, a fourth storage apparatus including a fourth volume is coupled to a second storage apparatus, the first and third storage apparatuses perform remote copy of copying data stored in a first volume to the third volume, the first and second storage apparatuses perform remote copy of copying data stored in the first volume to a second volume, and the third and fourth storage apparatuses perform remote copy of copying data stored in the third volume to the fourth volume.Type: ApplicationFiled: March 3, 2011Publication date: June 23, 2011Inventors: Hiroaki AKUTSU, Takashige Iwamura, Kenta Ninose, Yasuo Watanabe, Yasutomo Yamamoto, Yoshiaki Eguchi, Hisao Homma
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Publication number: 20110138085Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: ApplicationFiled: February 15, 2011Publication date: June 9, 2011Applicant: HITACHI, LTD.Inventors: Kazuyoshi SERIZAWA, Yasutomo YAMAMOTO, Norio SHIMOZONO, Akira DEGUCHI, Hisaharu TAKEUCHI, Takao SATO, Hisao HOMMA
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Patent number: 7925914Abstract: Availability of an information system including a storage system that performs remote copy between two or more storage apparatuses and a host computer using such storage system is improved. A third storage apparatus including a third volume is coupled to a first storage apparatus, a fourth storage apparatus including a fourth volume is coupled to a second storage apparatus, the first and third storage apparatuses perform remote copy of copying data stored in a first volume to the third volume, the first and second storage apparatuses perform remote copy of copying data stored in the first volume to a second volume, and the third and fourth storage apparatuses perform remote copy of copying data stored in the third volume to the fourth volume.Type: GrantFiled: April 26, 2010Date of Patent: April 12, 2011Assignee: Hitachi, Ltd.Inventors: Hiroaki Akutsu, Takashige Iwamura, Kenta Ninose, Yasuo Watanabe, Yasutomo Yamamoto, Yoshiaki Eguchi, Hisao Homma
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Patent number: 7912996Abstract: A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.Type: GrantFiled: January 24, 2008Date of Patent: March 22, 2011Assignee: Hitachi. Ltd.Inventors: Kazuyoshi Serizawa, Yasutomo Yamamoto, Norio Shimozono, Akira Deguchi, Hisaharu Takeuchi, Takao Sato, Hisao Homma