Patents by Inventor Kazumasa Matsubara

Kazumasa Matsubara 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).

  • Patent number: 11412034
    Abstract: An information processing system including Application Platform capable of communicating with Edge1 connected to each other to be able to communicate each other, in which Application Platform includes a second processor, information on microservices and data possessed by Edge1, and performance information describing the performance of Edge1, and the second processor uses predetermined data to combine a plurality of predetermined microservices and causes Edge1 to execute them in a predetermined order. When executing the application, microservices and data are moved between Edge1 based on the information of the microservices and the data possessed by Edge1, and the performance information.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: August 9, 2022
    Assignee: HITACHI, LTD.
    Inventors: Shimpei Nomura, Mitsuo Hayasaka, Kazumasa Matsubara, Eiichi Inoue
  • Publication number: 20220210218
    Abstract: An information processing system including Application Platform capable of communicating with Edge1 connected to each other to be able to communicate each other, in which Application Platform includes a second processor, information on microservices and data possessed by Edge1, and performance information describing the performance of Edge1, and the second processor uses predetermined data to combine a plurality of predetermined microservices and causes Edge1 to execute them in a predetermined order. When executing the application, microservices and data are moved between Edge1 based on the information of the microservices and the data possessed by Edge1, and the performance information.
    Type: Application
    Filed: September 14, 2021
    Publication date: June 30, 2022
    Applicant: Hitachi, Ltd.
    Inventors: Shimpei NOMURA, Mitsuo HAYASAKA, Kazumasa MATSUBARA, Eiichi INOUE
  • Publication number: 20220179970
    Abstract: Provided is a storage system capable of properly deleting derivative data stored at a plurality of sites. A CPU executes a creation process of creating data based on data stored in a storage device at a local site and storing the created data in the storage device of a node at one of the plurality of sites. Further, the CPU collects, from each of the plurality of sites, history information created at each of the plurality of sites to indicate the history of each creation process. When deleting deletion-specified data, the CPU identifies deletion derivative data according to the history information created at each of the plurality of sites, and deletes the deletion-specified data and the deletion derivative data from the storage device at each of the plurality of sites. The deletion derivative data is derivative data derived from the deletion-specified data.
    Type: Application
    Filed: September 9, 2021
    Publication date: June 9, 2022
    Applicant: Hitachi, Ltd.
    Inventors: Kazumasa MATSUBARA, Mitsuo HAYASAKA
  • Patent number: 11194504
    Abstract: Efficient pre-reading is performed in data transmission and reception between an Edge node and a Core node. An information processing device includes a storage device, outputs client request data based on a request of a client, and stores predetermined pre-read data in the storage device before the request of the client. The device includes: a relevance calculation module configured to calculate relevance between data based on an access history of the data; and a pre-reading and deletion module configured to determine data to be deleted from the storage device using the relevance when data having predetermined relevance with the client request data is to be stored to the storage device as the pre-read data and a storage capacity of the storage device is insufficient if at least one of the client request data and the pre-read data is to be stored to the storage device.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: December 7, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kazumasa Matsubara, Mitsuo Hayasaka
  • Patent number: 11150827
    Abstract: When the hash of the divided data is not duplicate with the hash registered in an in-memory hash table, the hash of the divided data is registered in the in-memory non-duplication data list. When the hash registered in the in-memory non-duplication data list is duplicated with the hash registered in an on-disk hash table, a duplicate count of the duplicate hash registered in the on-disk hash table is increased by 1 and an update time of the hash is updated to the latest value. When the duplication count of the hash registered in the on-disk hash table exceeds a threshold, the hash which is registered in the on-disk hash table and in which the duplication count has exceeded the threshold is moved from the on-disk hash table to the in-memory hash table.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: October 19, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kazumasa Matsubara, Mitsuo Hayasaka
  • Publication number: 20210255790
    Abstract: When the hash of the divided data is not duplicate with the hash registered in an in-memory hash table, the hash of the divided data is registered in the in-memory non-duplication data list. When the hash registered in the in-memory non-duplication data list is duplicated with the hash registered in an on-disk hash table, a duplicate count of the duplicate hash registered in the on-disk hash table is increased by 1 and an update time of the hash is updated to the latest value. When the duplication count of the hash registered in the on-disk hash table exceeds a threshold, the hash which is registered in the on-disk hash table and in which the duplication count has exceeded the threshold is moved from the on-disk hash table to the in-memory hash table.
    Type: Application
    Filed: September 1, 2020
    Publication date: August 19, 2021
    Inventors: Kazumasa MATSUBARA, Mitsuo HAYASAKA
  • Patent number: 10915362
    Abstract: A computer system includes a plurality of task processing nodes capable of executing tasks and a task management node which determines which a task processing node to allocate a new task and each task processing nodes includes a memory capable of caching data to be used by an allocation task which is a task allocated to the task processing node. The task management node stores task allocation history information including a correspondence relationship between the allocation task and the respective task processing node A CPU of the task management node determines a degree of similarity between the new task and the allocated task, determines the task processing node to which the new task should be allocated from the task processing nodes included in the task allocation history information based on the degree of similarity, and allocates the new task.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: February 9, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kazumasa Matsubara, Mitsuo Hayasaka
  • Publication number: 20200319817
    Abstract: Efficient pre-reading is performed in data transmission and reception between an Edge node and a Core node. An information processing device includes a storage device, outputs client request data based on a request of a client, and stores predetermined pre-read data in the storage device before the request of the client. The device includes: a relevance calculation module configured to calculate relevance between data based on an access history of the data; and a pre-reading and deletion module configured to determine data to be deleted from the storage device using the relevance when data having predetermined relevance with the client request data is to be stored to the storage device as the pre-read data and a storage capacity of the storage device is insufficient if at least one of the client request data and the pre-read data is to be stored to the storage device.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 8, 2020
    Applicant: HITACHI, LTD.
    Inventors: Kazumasa MATSUBARA, Mitsuo HAYASAKA
  • Patent number: 10452321
    Abstract: A storage system has a cluster structure in which a node is connected with a different node, the node having a volatile memory for storing first update data from a host and a first non-volatile memory for storing second copy data of second update data from the host to the different node, and having a copy management processing unit for storing first copy data of the first update data into a second non-volatile memory of the different node, and a storage service processing unit for transmitting, to the host, a response with respect to an update request of the first update data in response to the storage of the first copy data of the first update data by the copy management processing unit into the second non-volatile memory of the different node.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 22, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuo Hayasaka, Kazumasa Matsubara, Masanori Takada, Yoshihiro Yoshii
  • Patent number: 10394484
    Abstract: A first storage node generates a plurality of distributedly arranged write data blocks from write data and generates a first redundant data block from the plurality of distributedly arranged write data blocks. One distributedly arranged write data block is arranged in a second data block and the first redundant data block is arranged in a third storage node. A second storage node generates a second redundant data block from the plurality of distributedly arranged write data blocks selected from the distributedly arranged write data block held therein. The second storage node rearranges each of the plurality of selected distributedly arranged write data blocks in a rearrangement destination storage node and arranges the second redundant data block in a storage node other than the rearrangement destination storage node.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: August 27, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuo Hayasaka, Kazumasa Matsubara
  • Publication number: 20190138358
    Abstract: A computer system includes a plurality of task processing nodes capable of executing tasks and a task management node which determines which a task processing node to allocate a new task and each task processing nodes includes a memory capable of caching data to be used by an allocation task which is a task allocated to the task processing node. The task management node stores task allocation history information including a correspondence relationship between the allocation task and the respective task processing node A CPU of the task management node determines a degree of similarity between the new task and the allocated task, determines the task processing node to which the new task should be allocated from the task processing nodes included in the task allocation history information based on the degree of similarity, and allocates the new task.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 9, 2019
    Applicant: HITACHI, LTD.
    Inventors: Kazumasa MATSUBARA, Mitsuo HAYASAKA
  • Publication number: 20180373435
    Abstract: A first storage node generates a plurality of distributedly arranged write data blocks from write data and generates a first redundant data block from the plurality of distributedly arranged write data blocks. One distributedly arranged write data block is arranged in a second data block and the first redundant data block is arranged in a third storage node. A second storage node generates a second redundant data block from the plurality of distributedly arranged write data blocks selected from the distributedly arranged write data block held therein. The second storage node rearranges each of the plurality of selected distributedly arranged write data blocks in a rearrangement destination storage node and arranges the second redundant data block in a storage node other than the rearrangement destination storage node.
    Type: Application
    Filed: February 26, 2016
    Publication date: December 27, 2018
    Inventors: Mitsuo HAYASAKA, Kazumasa MATSUBARA
  • Publication number: 20180260463
    Abstract: A computer system comprising computers, having a database built on storage areas included in computers, the processor of at least one computer being configured to: identify data to be used in first processing in a case of receiving a request to execute the first processing; perform data inquiry for inquiring about presence of the data to be used in the first processing to computers providing the database; identify computers holding the data to be used in the first processing, based on responses to the data inquiry; and assign the first processing to at least one of computers holding the data to be used in first processing.
    Type: Application
    Filed: January 13, 2018
    Publication date: September 13, 2018
    Applicant: HITACHI, LTD.
    Inventors: Kazumasa MATSUBARA, Jun NEMOTO
  • Publication number: 20170344313
    Abstract: A storage system has a cluster structure in which a node is connected with a different node, the node having a volatile memory for storing first update data from a host and a first non-volatile memory for storing second copy data of second update data from the host to the different node, and having a copy management processing unit for storing first copy data of the first update data into a second non-volatile memory of the different node, and a storage service processing unit for transmitting, to the host, a response with respect to an update request of the first update data in response to the storage of the first copy data of the first update data by the copy management processing unit into the second non-volatile memory of the different node.
    Type: Application
    Filed: January 23, 2015
    Publication date: November 30, 2017
    Inventors: Mitsuo HAYASAKA, Kazumasa MATSUBARA, Masanori TAKADA, Yoshihiro YOSHII
  • Publication number: 20170293452
    Abstract: A storage apparatus includes a controller configured to carry out data processing for content that is received, and a media area configured to store the content for which the data processing has been carried out. The controller is configured to classify segments in the content and carry out data rearrangement processing of assembling segments of the same type in the classified segments. The controller is configured to carry out data amount reduction processing for the content for which the data rearrangement processing has been carried out, and store in the media area the content for which the data amount reduction processing has been carried out.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 12, 2017
    Inventors: Mitsuo HAYASAKA, Kazumasa MATSUBARA
  • Patent number: 9436559
    Abstract: A storage apparatus is connected to a host apparatus and a secondary storage apparatus and includes a memory, a storage device, and a processor. The memory includes a save memory area and a cache memory area that temporarily stores data received from the host apparatus. The storage device stores data that is received from the host apparatus. The processor controls a duplication process for specified data to another storage apparatus at a point in time of a start of duplication, saves a first data block into the save memory area when receiving an update request of the first data block in the cache memory area after the start of duplication, and updates the first data block in the cache memory area to an updated data block.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: September 6, 2016
    Assignee: HITACHI, LTD.
    Inventors: Mitsuo Hayasaka, Hitoshi Kamei, Kazumasa Matsubara
  • Publication number: 20160034358
    Abstract: A storage apparatus is connected to a host apparatus and a secondary storage apparatus and includes a memory, a storage device, and a processor. The memory includes a save memory area and a cache memory area that temporarily stores data received from the host apparatus. The storage device stores data that is received from the host apparatus. The processor controls a duplication process for specified data to another storage apparatus at a point in time of a start of duplication, saves a first data block into the save memory area when receiving an update request of the first data block in the cache memory area after the start of duplication, and updates the first data block in the cache memory area to an updated data block.
    Type: Application
    Filed: January 17, 2014
    Publication date: February 4, 2016
    Applicant: Hitachi, Ltd.
    Inventors: Mitsuo HAYASAKA, Hitoshi KAMEI, Kazumasa MATSUBARA
  • Publication number: 20160034476
    Abstract: A file management method according to the present invention is based upon a file management method of making a file from a client to a storage device redundant by a certain redundant number and storing the file in the storage device, and the file management method according to the present invention includes a first step of accepting an additional file from the client to the storage device, a second step of comparing capacity of the additional file and unused physical capacity of the storage device and a third step of changing the redundant number of the already stored file, increasing the unused physical capacity and storing the additional file in the storage device when the capacity of the additional file is larger than the unused physical capacity.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 4, 2016
    Applicant: Hitachi, Ltd.
    Inventors: Kazumasa MATSUBARA, Mitsuo HAYASAKA, Hitoshi KAMEI
  • Publication number: 20150154211
    Abstract: In a file storage service system, a computer stores files in a hybrid cloud. The computer comprises an extension metadata table which stores file storage conditions and target availability and an arrangement planned cloud table which stores a first identifier of a first cloud included in the hybrid cloud. The computer further comprises: an arrangement number calculation unit which selects a second cloud included in the hybrid cloud and satisfying the storage conditions and stores an identifier of the selected second cloud as the first identifier of the first cloud in the arrangement planned cloud table when availability of the selected second cloud satisfies the target availability; and a file arrangement management unit which stores a file uploaded from a client terminal in the first cloud identified by the first identifier stored in the arrangement planned cloud table by referring to the extension metadata table.
    Type: Application
    Filed: April 2, 2013
    Publication date: June 4, 2015
    Applicant: HITACHI, LTD.
    Inventors: Kazumasa Matsubara, Hitoshi Kamei, Mitsuo Hayasaka