Patents by Inventor Mikito Ogata
Mikito Ogata 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: 9904687Abstract: The present invention relates to a storage apparatus that executes de-duplication processing. Specifically, a storage apparatus includes a storing apparatus configured to provide a first storage area and a second storage area and a control unit. The control unit determines, on the basis of a result of comparison of a compression ratio of compressed data with a threshold, whether first duplication determination for determining whether data same as the data compressed without being stored in the first storage area is stored in the second storage area is executed or second duplication determination for determining whether data same as the data compressed after being stored in the first storage area is stored in the second storage area is executed. Further, the control unit changes the threshold on the basis of a state of the storage apparatus.Type: GrantFiled: February 13, 2013Date of Patent: February 27, 2018Assignees: Hitachi, Ltd., Hitachi Information & Telecommunication Engineering, Ltd.Inventors: Hidehisa Arikawa, Naomitsu Tashiro, Mikito Ogata
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Publication number: 20160291877Abstract: A storage system divides a file into large chunks, executes primary deduplication processing (a first step in deduplication processing) to perform deduplication on the large chunks regardless of a file format, divides at least one large chunk into small chunks, and does not execute secondary deduplication processing (a second step in the deduplication processing) to perform deduplication on the small chunks when the file format satisfies a predetermined condition but executes the secondary deduplication processing when the file format does not satisfy the predetermined condition.Type: ApplicationFiled: December 24, 2013Publication date: October 6, 2016Inventors: Tomoki HIGUCHI, Mikito OGATA, Hidehisa ARIKAWA
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Publication number: 20160259591Abstract: A storage system, in a write process of a file, stores the file in a memory and selects whether or not to perform a deduplication process of a chunk based on whether or not at least one of an attribute of the file and a usage capacity at a time of a chunk being read from the memory satisfies a predetermined condition, with respect to each of multiple chunks composing the file. With respect to the chunks which are selected not to perform a deduplication process, a deduplication process may be performed asynchronously from a write process.Type: ApplicationFiled: December 24, 2013Publication date: September 8, 2016Applicants: HITACHI, LTD., Hitachi Information & Telecommunication Engineering Ltd.Inventors: Hidehisa ARIKAWA, Naomitsu TASHIRO, Mikito OGATA
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Publication number: 20150356109Abstract: The present invention relates to a storage apparatus that executes de-duplication processing. Specifically, a storage apparatus includes a storing apparatus configured to provide a first storage area and a second storage area and a control unit. The control unit determines, on the basis of a result of comparison of a compression ratio of compressed data with a threshold, whether first duplication determination for determining whether data same as the data compressed without being stored in the first storage area is stored in the second storage area is executed or second duplication determination for determining whether data same as the data compressed after being stored in the first storage area is stored in the second storage area is executed. Further, the control unit changes the threshold on the basis of a state of the storage apparatus.Type: ApplicationFiled: February 13, 2013Publication date: December 10, 2015Applicants: Hitachi, Ltd., Hitachi Information & Telecommunication Engineering, Ltd.Inventors: Hidehisa ARIKAWA, Naomitsu TASHIRO, Mikito OGATA
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Patent number: 8700572Abstract: Provided is a storage system providing a data storage area to an external apparatus. The storage system includes at least a first information processing apparatus including a first logical storage area forming the data storage area and a first data processing part performing processing of reducing the storage capacity used by a backup target data in the first logical storage area, and a second information processing apparatus communicatively coupled to the first information processing apparatus and including a second logical storage area forming the data storage area, and a second data processing part performing processing of reducing the storage capacity used by the backup target data in the second logical storage area.Type: GrantFiled: December 20, 2011Date of Patent: April 15, 2014Assignees: Hitachi, Ltd., Hitachi Information & Telecommunication Engineering, Ltd.Inventors: Shigeru Kaga, Mikito Ogata, Mamoru Sato
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Publication number: 20130282672Abstract: The present invention not only reduces the load but also enhances the accuracy of de-duplication in a storage apparatus which performs in-line de-duplication processing and post-process de-duplication processing. A storage apparatus comprises a storage device and a controller. The controller receives multiple files, and by performing in-line de-duplication processing under a prescribed condition, detects from among the multiple files a file which is duplicated with a file received in the past, stores in the temporary storage area a file other than the detected file of the multiple files, and partitions the stored file into multiple chunks, and by performing post-process de-duplication processing, detects from among the multiple chunks a chunk which is duplicated with a chunk received in the past, and stores in the transfer-destination storage area a chunk other than the detected chunk of the multiple chunks.Type: ApplicationFiled: April 18, 2012Publication date: October 24, 2013Applicants: HITACHI COMPUTER PERIPHERALS CO., LTD., HITACHI, LTD.Inventors: Naomitsu Tashiro, Mikito Ogata
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Publication number: 20130226873Abstract: Provided is a storage system which provides a data storage area to an external apparatus. The storage system includes at least a first information apparatus including a first logical storage area constituting the data storage area, and a first data processing part for performing a processing for reducing a storage capacity of the first logical storage area used by backup target data, and a second information apparatus including a second logical storage area constituting the data storage area, and a second data processing part for performing a processing for reducing a storage capacity of the second logical storage area used by backup target data. The second information apparatus is communicatively coupled with the first information apparatus.Type: ApplicationFiled: February 28, 2012Publication date: August 29, 2013Applicants: HITACHI COMPUTER PERIPHERALS CO., LTD., HITACHI, LTD.Inventor: Mikito Ogata
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Patent number: 8521692Abstract: Provided is a storage system which provides a data storage area to an external apparatus. The storage system includes at least a first information apparatus including a first logical storage area constituting the data storage area, and a first data processing part for performing a processing for reducing a storage capacity of the first logical storage area used by backup target data, and a second information apparatus including a second logical storage area constituting the data storage area, and a second data processing part for performing a processing for reducing a storage capacity of the second logical storage area used by backup target data. The second information apparatus is communicatively coupled with the first information apparatus.Type: GrantFiled: February 28, 2012Date of Patent: August 27, 2013Assignee: Hitachi, Ltd.Inventor: Mikito Ogata
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Publication number: 20130159255Abstract: Provided is a storage system providing a data storage area to an external apparatus. The storage system includes at least a first information processing apparatus including a first logical storage area forming the data storage area and a first data processing part performing processing of reducing the storage capacity used by a backup target data in the first logical storage area, and a second information processing apparatus communicatively coupled to the first information processing apparatus and including a second logical storage area forming the data storage area, and a second data processing part performing processing of reducing the storage capacity used by the backup target data in the second logical storage area.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Inventors: Shigeru Kaga, Mikito Ogata, Mamoru Sato
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Publication number: 20070214294Abstract: The present invention provides a method, a system and code for backing up information on a storage system, for example, a disk system, connected to a storage area network. The host or server system off loads the task of backing up its data to the storage system that stores the data. In an exemplary embodiment a server sends an E-Copy command to a disk system. Next, the disk system finds an available back-device, for example a tape or DLT library, and then backups the information indicated in the E-Copy command to the back-up device. A user interface is provided so that one or more path groups, comprising at least a target port and an initiator port, on a disk system may be designated.Type: ApplicationFiled: May 15, 2007Publication date: September 13, 2007Applicant: Hitachi, Ltd.Inventors: Keishi Tamura, Yoshinori Okami, Hiroshi Abei, Mikito Ogata
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Patent number: 7246214Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: GrantFiled: August 4, 2004Date of Patent: July 17, 2007Assignee: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Shigeru Kishiro, Akira Yamamoto
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Patent number: 7228397Abstract: The present invention provides a method, a system and code for backing up information on a storage system, for example, a disk system, connected to a storage area network. The host or server system off loads the task of backing up its data to the storage system that stores the data. In an exemplary embodiment a server sends an E-copy command to a disk system. Next, the disk system finds an available back-up device, for examples a tape or DLT library, and then backs-up the information indicated in the E-copy command to the back-up device. A user interface is provided so that one or more path groups, comprising at least a target port and an initiator port, on a disk system may be designated.Type: GrantFiled: March 19, 2004Date of Patent: June 5, 2007Assignee: Hitachi, Ltd.Inventors: Keishi Tamura, Yoshinori Okami, Hiroshi Abei, Mikito Ogata
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Patent number: 7213114Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: GrantFiled: August 12, 2004Date of Patent: May 1, 2007Assignee: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Shigeru Kishiro, Teruo Nagasawa, Takeshi Koide
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Patent number: 7194590Abstract: A storage apparatus configuration in a three data center architecture comprises first and second data storage systems, and a remote data storage system. The first data storage systems can copy an image of data stored therein to the remote data storage system without affecting access to storage in the first data storage system. The second data storage system is configured to perform a takeover operation if the first data storage system becomes unavailable.Type: GrantFiled: September 12, 2003Date of Patent: March 20, 2007Assignee: Hitachi, Ltd.Inventors: Kyosuke Achiwa, Takashi Oeda, Katsunori Nakamura, Toshio Nakano, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Shigeru Kishiro
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Patent number: 7167962Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: GrantFiled: December 30, 2005Date of Patent: January 23, 2007Assignee: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Haruaki Watanabe, Kouji Arai, Takashi Oeda, Akira Yamamoto, Kenji Yamagami, Shigeru Kishiro
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Publication number: 20060195668Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: ApplicationFiled: December 30, 2005Publication date: August 31, 2006Applicant: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Haruaki Watanabe, Kouji Arai, Takashi Oeda, Akira Yamamoto, Kenji Yamagami, Shigeru Kishiro
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Publication number: 20060195667Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: ApplicationFiled: December 28, 2005Publication date: August 31, 2006Applicant: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Shigeru Kishiro, Hideo Tabuchi, Akinobu Shimada, Masafumi Nozawa
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Patent number: 7082506Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: GrantFiled: March 8, 2002Date of Patent: July 25, 2006Assignee: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki
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Publication number: 20060085612Abstract: Two data centers located in the vicinity are connected using a synchronous transfer copy function, and one of the data centers is coupled with a third data center disposed at a remote location by an asynchronous remote copying function. The order whereat a storage sub-system located in the vicinity has received data from a host is consistently guaranteed, and the third data center holds the data. Further, each storage sub-system includes a function whereby, during normal operation, data can be exchanged and the data update state can be obtained by the storage sub-systems located in the two data centers that do not directly engage in data transmission.Type: ApplicationFiled: October 11, 2005Publication date: April 20, 2006Applicant: Hitachi, Ltd.Inventors: Toshio Nakano, Katsunori Nakamura, Mikito Ogata, Yoshinori Okami, Seiichi Higaki, Hiroshi Abei, Shigeru Kishiro
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Patent number: 6961816Abstract: A disk array device selects a redundant generation method for reducing the overhead and improving the reliability associated with generating redundant data. The disk array device includes a disk controller connected to and controlling an array of disk drives. The disk controller includes a redundant data generator, a difference data generator, and a redundant data generation method selector. The redundant data generator is able to generate redundant data via a read and modify method and an all stripes method. The disk array device selects a method of generating redundant data from a method of read and modify and all stripes, and a method of generation in a drive and a method of difference, both of which are executed to generate redundant data on a disk drive.Type: GrantFiled: June 24, 2003Date of Patent: November 1, 2005Assignee: Hitachi, Ltd.Inventors: Eiju Katsuragi, Mikito Ogata, Akira Kurano, Toshihiko Tamiya, Akira Yamamoto, Naoya Takahashi