Patents by Inventor Yasuhito Arikawa

Yasuhito Arikawa 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).

  • Storage control apparatus, storage control program, and storage control method
    Patent number: 8001344
    Abstract: Disclosed are a storage control apparatus, a storage control program, and a storage control method that collect the backup of storage data in units of generation at low cost. A storage control apparatus that creates a generation backup of a storage, comprising: a first copy section that creates a snapshot of at least one of all data stored in the storage at an indicated time point and difference data stored in the storage in an indicated time period; a second copy section that creates a mirror of at least one of all data stored in the storage and difference data stored in the storage in an indicated time period; and a controller that causes one of the first and second copy sections to copy all data stored in the storage and causes the other to copy difference data between generations stored in the storage.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: August 16, 2011
    Assignee: Fujitsu Limited
    Inventors: Koji Uchida, Hideaki Omura, Yasuhito Arikawa
  • Disk array apparatus, computer-readable recording medium having disk array apparatus control program recorded thereon, and disk array apparatus control method
    Patent number: 7925926
    Abstract: A disk array apparatus has a plurality of disks constituting a mounted RAID group and controls access from an upper-level device to each of the disks. The disk array apparatus also has a performance information collector for collecting a piece of performance-related information of each of the disks, and a suspected disk detector for comparing the pieces of information collected for the disks by the performance information collector among disks constituting a single one of the RAID group and detecting a suspected disk suspected of being abnormal in performance based on a result of the comparison.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: April 12, 2011
    Assignee: Fujitsu Limited
    Inventors: Masahiro Yoshida, Yasuhito Arikawa
  • DISK ARRAY APPARATUS, COMPUTER-READABLE RECORDING MEDIUM HAVING DISK ARRAY APPARATUS CONTROL PROGRAM RECORDED THEREON, AND DISK ARRAY APPARATUS CONTROL METHOD
    Publication number: 20090089503
    Abstract: A disk array apparatus has a plurality of disks constituting a mounted RAID group and controls access from an upper-level device to each of the disks. The disk array apparatus also has a performance information collector for collecting a piece of performance-related information of each of the disks, and a suspected disk detector for comparing the pieces of information collected for the disks by the performance information collector among disks constituting a single one of the RAID group and detecting a suspected disk suspected of being abnormal in performance based on a result of the comparison.
    Type: Application
    Filed: September 4, 2008
    Publication date: April 2, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Masahiro YOSHIDA, Yasuhito Arikawa
  • Storage control apparatus, storage control program, and storage control method
    Publication number: 20070294495
    Abstract: Disclosed are a storage control apparatus, a storage control program, and a storage control method that collect the backup of storage data in units of generation at low cost. A storage control apparatus that creates a generation backup of a storage, comprising: a first copy section that creates a snapshot of at least one of all data stored in the storage at an indicated time point and difference data stored in the storage in an indicated time period; a second copy section that creates a mirror of at least one of all data stored in the storage and difference data stored in the storage in an indicated time period; and a controller that causes one of the first and second copy sections to copy all data stored in the storage and causes the other to copy difference data between generations stored in the storage.
    Type: Application
    Filed: October 30, 2006
    Publication date: December 20, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Koji Uchida, Hideaki Omura, Yasuhito Arikawa