Patents by Inventor Yuji Sueoka
Yuji Sueoka 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: 7356623Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: GrantFiled: September 28, 2004Date of Patent: April 8, 2008Assignee: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Patent number: 7334069Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: GrantFiled: July 7, 2003Date of Patent: February 19, 2008Assignee: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Publication number: 20050050274Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: ApplicationFiled: September 28, 2004Publication date: March 3, 2005Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Patent number: 6816926Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: GrantFiled: July 7, 2003Date of Patent: November 9, 2004Assignee: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Publication number: 20040098542Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: ApplicationFiled: July 7, 2003Publication date: May 20, 2004Applicant: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Publication number: 20040098543Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: ApplicationFiled: July 7, 2003Publication date: May 20, 2004Applicant: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Patent number: 6721823Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: GrantFiled: April 1, 2003Date of Patent: April 13, 2004Assignee: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Publication number: 20030191873Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: ApplicationFiled: April 1, 2003Publication date: October 9, 2003Applicant: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Patent number: 6567865Abstract: For using a plurality of files contained in one logical device with a plurality of processing systems, sharing of a data storage unit among the plurality of processing systems is realized without need for a host processing system to check use states of the files in a server storage unit. Information concerning extent (extent range) of an input/output processing request issued by a host processor is stored in a control memory incorporated in a control unit for allowing the control unit to make decision as to overlap of the extents of the input/output processings to thereby effectuate exclusive control on an extent-by-extent basis.Type: GrantFiled: December 13, 1999Date of Patent: May 20, 2003Assignee: Hitachi, Ltd.Inventors: Masanori Araki, Masatoshi Baba, Yuji Sueoka, Isamu Kurokawa, Hisaharu Takeuchi
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Publication number: 20010047448Abstract: Data migration is made to be performed in short time without actual data move and independent from the capacity of a magnetic disk volume. As viewed from an upper hierarchical system, “new physical drive installation or addition” can be performed easily, rapidly and safely. If a physical address is to be changed after a host generates or updates data in a magnetic disk volume, a service processor is made to change only a correspondence between physical and logical addresses. The physical address can therefore be changed by retaining the data written in a magnetic disk. Accordingly, if there is an idle area in a physical drive, as viewed from an upper hierarchical system, “physical drive installation or addition” can be performed easily.Type: ApplicationFiled: February 23, 2001Publication date: November 29, 2001Inventors: Yuji Sueoka, Kouji Aral