Patents by Inventor Azusa Jin
Azusa Jin 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: 9846619Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: GrantFiled: September 30, 2015Date of Patent: December 19, 2017Assignee: Hitachi, Ltd.Inventors: Taiki Kono, Hidenori Suzuki, Kunihiko Nashimoto, Shigeo Homma, Toru Suzuki, Tomohiro Kawaguchi, Hideo Saito, Azusa Jin, Hiroshi Nasu, Keishi Tamura, Shoji Sugino
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Publication number: 20170300233Abstract: A storage system forms a high availability pair for data duplication using a first volume of a first storage apparatus as a primary volume and a second volume of a second storage apparatus as a secondary volume. The first volume and a third volume of a third storage apparatus are used as a primary volume and a secondary volume, respectively, to form an asynchronous copy pair. The second volume and the third volume are used as a primary volume and a secondary volume, respectively, to form a standby pair. When a command to form the asynchronous copy pair is received, the storage system refuses to form the asynchronous copy pair when the standby pair is not formed yet.Type: ApplicationFiled: October 28, 2014Publication date: October 19, 2017Inventors: Takamasa SATO, Takashi SAKAGUCHI, Azusa JIN, Kensuke NARITA, Yosuke KATOH, Takashi NAGAO
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Publication number: 20170277600Abstract: A primary storage system is equipped with a local storage subsystem having a mirror volume of a volume in a primary storage subsystem, and a remote storage subsystem having a mirror volume of the volume in the primary storage subsystem at a secondary site. When storing a write data from a host to a volume, the primary storage subsystem determines an SEQ# to be stored in a journal corresponding to the write request, creates a journal including the relevant SEQ# and a replica of the write data, and transmits the relevant SEQ# to the local storage subsystem, which creates a journal including the relevant SEQ# and stores it in its own journal volume. But when creation of the journal including the relevant SEQ# is stopped, the local storage subsystem creates a dummy journal including the relevant SEQ# but not including the write data.Type: ApplicationFiled: November 26, 2014Publication date: September 28, 2017Inventors: Ryunosuke KAMIMOTO, Hideo SAITO, Azusa JIN, Keishi TAMURA, Takahiko TAKEDA, Takashi SAKAGUCHI, Hiroyuki MORIMOTO
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Patent number: 9563383Abstract: The primary storage sub system writes a marker that includes the sequence number and that indicates a completion of the data copy into the journal storage area of the first primary group when the data copy from a first primary data volume to a second primary data volume is completed. The primary storage sub system transmits a journal of the first primary group to a first secondary group corresponded to the first primary group and transmits a journal of a second primary group to a second secondary group corresponded to a second primary group.Type: GrantFiled: May 12, 2014Date of Patent: February 7, 2017Assignee: Hitachi, Ltd.Inventors: Azusa Jin, Tomohiro Kawaguchi, Hideo Saito, Akira Deguchi, Tomohiro Yoshihara
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Publication number: 20160342490Abstract: A first storage system manages a first volume, with a first internal volume identifier, and to provide the first volume with a given first virtual volume identifier to a server. A second storage system manages a second volume, with a second internal volume identifier, and to provide the second volume with the given first virtual volume identifier to the server. A third storage system manages a third volume. The first storage system manages a first copy pair between the first volume and the third volume with a first internal copy identifier, and to provide a first copy pair with a given virtual copy pair identifier to the server. The second storage system manages a second copy pair between the second volume and the third volume with a second internal copy identifier, and to provide a second copy pair with the given virtual copy pair identifier to the server.Type: ApplicationFiled: August 15, 2014Publication date: November 24, 2016Applicant: HITACHI, LTD.Inventors: Akira DEGUCHI, Azusa JIN, Toru SUZUKI
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Publication number: 20160259559Abstract: The primary storage sub system writes a marker that includes the sequence number and that indicates a completion of the data copy into the journal storage area of the first primary group when the data copy from a first primary data volume to a second primary data volume is completed. The primary storage sub system transmits a journal of the first primary group to a first secondary group corresponded to the first primary group and transmits a journal of a second primary group to a second secondary group corresponded to a second primary group.Type: ApplicationFiled: May 12, 2014Publication date: September 8, 2016Applicant: Hitachi, Ltd.Inventors: Azusa JIN, Tomohiro KAWAGUCHI, Hideo SAITO, Akira DEGUCHI, Tomohiro YOSHIHARA
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Publication number: 20160019120Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Inventors: Taiki KONO, Hidenori SUZUKI, Kunihiko NASHIMOTO, Shigeo HOMMA, Toru SUZUKI, Tomohiro KAWAGUCHI, Hideo SAITO, Azusa JIN, Hiroshi NASU, Keishi TAMURA, Shoji SUGINO
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Publication number: 20160004616Abstract: Fault-tolerance is improved by duplicating data and update information of that data. A storage system has a first storage apparatus that is connected to a host computer, and includes a plurality of first data volumes and a first journal volume, a second storage apparatus that is connected to the host computer and the first storage apparatus, and includes a plurality of second data volumes for storing duplicated data of each of the plurality of first data volumes, and a second journal volume for storing the duplicated data of the first journal volume, a third storage apparatus that is connected to the first storage apparatus, and includes a plurality of third data volumes that configure a remote copy pair with the plurality of first data volumes by using the journal data received from the first storage apparatus, and a fourth storage apparatus that is connected to the third storage apparatus.Type: ApplicationFiled: May 8, 2013Publication date: January 7, 2016Inventors: Kensuke NARITA, Toru SUZUKI, Naoko IKEGAYA, Azusa JIN, Hideo SAITO
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Patent number: 9176858Abstract: The present invention relates to executing data compression based on the used capacities of real pools. The present storage subsystem stores a definition information regarding conditions of starting data compression and ending data compression defined via usage rates of a real pool as physical area, wherein if the usage rate of the real pool satisfies the condition for starting compression, the compression processing is started, and if the usage rate satisfies the condition for ending compression, the compression processing is ended.Type: GrantFiled: November 19, 2012Date of Patent: November 3, 2015Assignee: HITACHI, LTD.Inventors: Azusa Jin, Tomohiro Kawaguchi, Masahiro Arai, Hiroaki Akutsu
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Patent number: 9152337Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: GrantFiled: November 18, 2014Date of Patent: October 6, 2015Assignee: Hitachi, Ltd.Inventors: Taiki Kono, Hidenori Suzuki, Kunihiko Nashimoto, Shigeo Homma, Toru Suzuki, Tomohiro Kawaguchi, Hideo Saito, Azusa Jin, Hiroshi Nasu, Keishi Tamura, Shoji Sugino
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Publication number: 20150074364Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Inventors: Taiki KONO, Hidenori SUZUKI, Kunihiko NASHIMOTO, Shigeo HOMMA, Toru SUZUKI, Tomohiro KAWAGUCHI, Hideo SAITO, Azusa JIN, Hiroshi NASU, Keishi TAMURA, Shoji SUGINO
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Patent number: 8904133Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: GrantFiled: August 7, 2014Date of Patent: December 2, 2014Assignee: Hitachi, Ltd.Inventors: Taiki Kono, Hidenori Suzuki, Kunihiko Nashimoto, Shigeo Homma, Toru Suzuki, Tomohiro Kawaguchi, Hideo Saito, Azusa Jin, Hiroshi Nasu, Keishi Tamura, Shoji Sugino
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Publication number: 20140351538Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.Type: ApplicationFiled: August 7, 2014Publication date: November 27, 2014Inventors: Taiki KONO, Hidenori SUZUKI, Kunihiko NASHIMOTO, Shigeo HOMMA, Toru SUZUKI, Tomohiro KAWAGUCHI, Hideo SAITO, Azusa JIN, Hiroshi NASU, Keishi TAMURA, Shoji SUGINO
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Publication number: 20140143517Abstract: The present invention relates to executing data compression based on the used capacities of real pools. The present storage subsystem stores a definition information regarding conditions of starting data compression and ending data compression defined via usage rates of a real pool as physical area, wherein if the usage rate of the real pool satisfies the condition for starting compression, the compression processing is started, and if the usage rate satisfies the condition for ending compression, the compression processing is ended.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: HITACHI, LTD.Inventors: Azusa Jin, Tomohiro Kawaguchi, Masahiro Arai, Hiroaki Akutsu
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Patent number: 8612683Abstract: The present invention creates a pool comprising tiers corresponding to the performance of logical volumes. A first storage apparatus either acquires or measures the performance of multiple external pool volumes of an external storage (S1711 through S1714), and creates a pool volume group based on the performance of the external pool volumes (S1715, S1716). The rank order of a tier is decided in accordance with the performance of each pool volume group (S1717, S1718). This makes it possible to relatively easily create a pool comprising multiple appropriate tiers that are suited to the current situation.Type: GrantFiled: August 1, 2011Date of Patent: December 17, 2013Assignee: Hitachi, Ltd.Inventors: Azusa Jin, Yoshiaki Eguchi, Akira Deguchi, Hiroaki Akutsu
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Publication number: 20130036286Abstract: The present invention creates a pool comprising tiers corresponding to the performance of logical volumes. A first storage apparatus either acquires or measures the performance of multiple external pool volumes of an external storage (S1711 through S1714), and creates a pool volume group based on the performance of the external pool volumes (S1715, S1716). The rank order of a tier is decided in accordance with the performance of each pool volume group (S1717, S1718). This makes it possible to relatively easily create a pool comprising multiple appropriate tiers that are suited to the current situation.Type: ApplicationFiled: August 1, 2011Publication date: February 7, 2013Applicant: HITACHI, LTD.Inventors: Azusa Jin, Yoshiaki Eguchi, Akira Deguchi, Hiroaki Akutsu