Patents by Inventor Yasuhiro Onda

Yasuhiro Onda 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).

  • Publication number: 20160085750
    Abstract: A storage apparatus includes a storage unit configured to include a plurality of tiers, a group management unit configured to manage files stored in any of the tiers in the storage unit by dividing the files into a plurality of groups, a movement target selection unit configured to select a group, out of the groups, which satisfies a tier movement condition as a movement target of the tier, and a file movement unit configured to move a subordinate file belonging to the group selected by the movement target selection unit, from a tier in which the subordinate file is stored to another tier.
    Type: Application
    Filed: August 11, 2015
    Publication date: March 24, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Suijin TAKETA, Yasuhiro Onda, TOSHIO IMAI
  • Publication number: 20150046394
    Abstract: When a master name node has created a file, the master name node performs meta-information synchronization with only a slave name node, and does not perform the meta-information synchronization with a dummy name node. The master name node performs the meta-information synchronization with the dummy name node asynchronously with file creation. Furthermore, the slave name node stores the same meta-information as that stored in the master name node, and the file is stored in a data node placed in the same node as the slave name node and a data node placed in the same node as the master name node.
    Type: Application
    Filed: June 30, 2014
    Publication date: February 12, 2015
    Inventors: Yasuhiro Onda, Yoichi YASUFUKU, Norikatsu Sasakawa, Noboru Osada, Suijin Taketa
  • Publication number: 20140082280
    Abstract: A storage apparatus is disclosed, including a first storage area, a second storage area, and a controller. The controller writes data to the first storage area based on a write request. When the data are written in the first storage area, the controller sequentially writes the data to the second storage area from a beginning of a physical address thereof. The controller outputs the data to a backup apparatus by sequentially reading out the data being written in the second storage area from the beginning of the physical address.
    Type: Application
    Filed: July 18, 2013
    Publication date: March 20, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Katsuhiko Shioya, Yasuhiro Onda, Suijin Taketa
  • Patent number: 7315922
    Abstract: An information processing apparatus transmits, by polling, a status verifying message to a disk array apparatus to verify a status of the disk array apparatus. The disk array apparatus attaches, upon receiving the status verifying message, a request for a command of a process to be executed to a response message to the status verifying message, and transmits the response message to the information processing apparatus. The information processing apparatus creates a command based on the request attached to the response message, and transmits the command created to the disk array apparatus.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: January 1, 2008
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Otsuka, Yasuhiro Onda, Fumio Yamazaki
  • Publication number: 20070233757
    Abstract: The present invention relates a method and system for garbage collection of a magnetic tape, and it is an object of the present invention to provide a method and system for garbage collection of a magnetic tape, which are capable of efficiently executing a garbage collection. A tape library device connected with a magnetic disk device. The tape library device includes at least two magnetic tape media being capable of storing data and first controller for controlling transfer information and storing information. The magnetic disc device includes a magnetic disc being capable of storing data and second controller for controlling transfer information and storing information.
    Type: Application
    Filed: March 23, 2007
    Publication date: October 4, 2007
    Applicant: Fujitsu Limited
    Inventors: Yusuke Inai, Yasuhiro Onda, Fumio Yamazaki, Satoshi Taki
  • Publication number: 20060112220
    Abstract: An information processing apparatus transmits, by polling, a status verifying message to a disk array apparatus to verify a status of the disk array apparatus. The disk array apparatus attaches, upon receiving the status verifying message, a request for a command of a process to be executed to a response message to the status verifying message, and transmits the response message to the information processing apparatus. The information processing apparatus creates a command based on the request attached to the response message, and transmits the command created to the disk array apparatus.
    Type: Application
    Filed: February 25, 2005
    Publication date: May 25, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Hiroshi Otsuka, Yasuhiro Onda, Fumio Yamazaki
  • Publication number: 20060026459
    Abstract: An apparatus for storing data received from other apparatus includes a first storage unit that stores the data received from the other apparatus; a second storage unit that stores the data stored in the first storage unit; a history storage unit that stores information on a storage history of the data that is written from the first storage unit into the second storage unit; and a data recalling unit that reads out the data stored in the second storage unit and stores the data read out to the first storage unit based on the information on the storage history.
    Type: Application
    Filed: November 10, 2004
    Publication date: February 2, 2006
    Applicant: Fujitsu Limited
    Inventors: Hiroshi Otsuka, Yasuhiro Onda, Fumio Yamazaki
  • Publication number: 20060015680
    Abstract: A data storage apparatus includes a first storing unit that stores data in a sequential-access recording medium, and that stores storage history information relating to the data stored. The sequential-access recording medium stores the data by sequential access, and a second storing unit that stores any one of specific data and data excluding the specific data, in the sequential-access recording medium. The second storing unit detects the specific data from among the data stored, based on the storage history information.
    Type: Application
    Filed: November 24, 2004
    Publication date: January 19, 2006
    Applicant: Fujitsu Limited
    Inventors: Hiroshi Otsuka, Yasuhiro Onda, Fumio Yamazaki
  • Patent number: 6785791
    Abstract: A processing method for copying between storage device data regions and a memory system are provided to allow immediate access in a state of having completed copying in response to a copy instruction, even when actual data is being copied in a remote system, thus preventing a decrease in the performance of the access to the copy source during copying. Processes include copying data in a data region of a copy source to an intermediate media data region for each prescribed block unit in response to a copy instruction, as well as copying the data copied to the intermediate media data region to a copy destination data region. Processes also include interrupting copying and processing an access when there is an external access for a block of the copy source or the copy destination data region during the copy processing.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: August 31, 2004
    Assignee: Fujitsu Limited
    Inventors: Futoshi Watanabe, Yasuhiro Onda, Hidejiro Daikokuya, Mikio Ito
  • Patent number: 6757797
    Abstract: A copying method, disk storage system, and storage medium for copying data from one logical disk to another logical disk, making possible immediate access, in response to a copy command. Copying from a first logical disk to a second logical disk is performed for each area in a copy range, and when there is an access to either logical disk, copying is interrupted. When performing update access of an uncopied area in the first logical disk, the area is copied from the first logical disk to the second logical disk, and then the uncopied area is updated. When performing reference access of an uncopied area in the second logical disk, the corresponding area in the first logical disk is referenced. When performing update access of an uncopied area in the second logical disk, that area in the second logical disk is updated, and copying is prohibited.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: June 29, 2004
    Assignee: Fujitsu Limited
    Inventors: Norikazu Kaiya, Yasuhiro Onda, Tadaomi Kato
  • Patent number: 6732245
    Abstract: A copying method, disk storage system, and storage medium for copying data from one logical disk to another logical disk, making possible immediate access, in response to a copy command. Copying from a first logical disk to a second logical disk is performed for each area in a copy range, and where is an access to either logical disk, copying is interrupted. When performing update access of an uncopied area in the first logical disk, the area is copied from the first logical disk to a second logical disk, and then the uncopied area is updated. When performing reference access of an uncopied area in the second logical disk, the corresponding area in the first logical disk is referenced. When performing update access of an uncopied area in the second logical disk, that area in the second logical disk is updated, and copying is prohibited.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 4, 2004
    Assignee: Fujitsu Limited
    Inventors: Norikazu Kaiya, Yasuhiro Onda, Tadaomi Kato
  • Publication number: 20030028737
    Abstract: This invention relates to a copying method, disk storage system and storage medium for copying data from one logical disk to another logical disk, and makes immediate access in response to a copy command possible. Copying from logical disk 1 to logical disk 2 is performed for each area in the copy range, and when there is access, copying is interrupted. When performing update access of an uncopied area in the copy source 1, the area is copied from the copy source 1 to the copy destination, and then the area is updated. When performing reference access of an uncopied area in the copy destination 2, the corresponding area in the copy source 1 is referenced. When performing update access of an uncopied area in the copy destination 2, that area in the copy destination is updated, and copying is prohibited. In this way, it is possible to access the copy source 1 and copy destination 2 while copying is in progress, and it is possible to immediately regard that copying is completed by a copy instruction.
    Type: Application
    Filed: September 30, 2002
    Publication date: February 6, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Norikazu Kaiya, Yasuhiro Onda, Tadaomi Kato
  • Publication number: 20020144070
    Abstract: A processing method for copying between storage device data regions and a memory system are provided to allow immediate access in a state of having completed copying in response to a copy instruction, even when actual data is being copied in a remote system, thus preventing a decrease in the performance of the access to the copy source during copying. Processes include copying data in a data region of a copy source to an intermediate media data region for each prescribed block unit in response to a copy instruction, as well as copying the data copied to the intermediate media data region to a copy destination data region. Processes also include interrupting copying and processing an access when there is an external access for a block of the copy source or the copy destination data region during the copy processing.
    Type: Application
    Filed: October 31, 2001
    Publication date: October 3, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Futoshi Watanabe, Yasuhiro Onda, Hidejiro Daikokuya, Mikio Ito