Patents by Inventor Akihide OTAWA

Akihide OTAWA 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).

  • Information processing system, monitoring apparatus, and network device
    Patent number: 10769041
    Abstract: Each information processing apparatus judges a busy flag of a first port thereof based on a result of comparison of a busy level of the first port and a busy level of a second port of another information processing apparatus. A monitoring apparatus determines from among the information processing apparatuses, a first information processing apparatus and a second information processing apparatus, based on the results of judgment by the information processing apparatuses. An L2 switch changes to the second information processing apparatus, a destination of a frame whose destination is the first information processing apparatus and changes to the first information processing apparatus, a transmission source of the frame whose transmission source is the second information processing apparatus.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 8, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Masanori Takaoka, Naoyoshi Toshine, Yuya Ikuta, Junichi Murakami, Hideki Nagatomo, Sei Murata, Akihide Otawa
  • INFORMATION PROCESSING SYSTEM, MONITORING APPARATUS, AND NETWORK DEVICE
    Publication number: 20190018743
    Abstract: Each information processing apparatus judges a busy flag of a first port thereof based on a result of comparison of a busy level of the first port and a busy level of a second port of another information processing apparatus. A monitoring apparatus determines from among the information processing apparatuses, a first information processing apparatus and a second information processing apparatus, based on the results of judgment by the information processing apparatuses. An L2 switch changes to the second information processing apparatus, a destination of a frame whose destination is the first information processing apparatus and changes to the first information processing apparatus, a transmission source of the frame whose transmission source is the second information processing apparatus.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Masanori Takaoaka, Naoyoshi Toshine, Yuya Ikuta, Junichi Murakami, Hideki Nagatomo, Sei Murata, Akihide Otawa
  • Device and method for causing another device to execute write instruction according to index value representing load
    Patent number: 9600186
    Abstract: A first storage virtualization device operates in a system in which instructions requested by host computers are assigned to a plurality of storage virtualization devices. The first storage virtualization device includes an interface and a processor. The interface receives a write instruction assigned to the first storage virtualization device, data to be written by the write instruction, and operation statuses of other storage virtualization devices in the system. The processor calculates index values which represent loads when the first storage virtualization device processes the write instruction. The processor selects a second storage virtualization device for the purpose of requesting that it execute the write instruction by use of the operation statuses when the index values are greater than thresholds. The processor transmits the write instruction and the data to the second storage virtualization device.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 21, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Akira Satou, Toshiaki Yamauchi, Akihide Otawa
  • STORAGE VIRTUALIZATION DEVICE AND METHOD FOR CONTROLLING THE STORAGE VIRTUALIZATION DEVICE
    Publication number: 20150301753
    Abstract: A first storage virtualization device operates in a system in which instructions requested by host computers are assigned to a plurality of storage virtualization devices. The first storage virtualization device includes an interface and a processor. The interface receives a write instruction assigned to the first storage virtualization device, data to be written by the write instruction, and operation statuses of other storage virtualization devices in the system. The processor calculates index values which represent loads when the first storage virtualization device processes the write instruction. The processor selects a second storage virtualization device for the purpose of requesting that it execute the write instruction by use of the operation statuses when the index values are greater than thresholds. The processor transmits the write instruction and the data to the second storage virtualization device.
    Type: Application
    Filed: March 12, 2015
    Publication date: October 22, 2015
    Applicant: Fujitsu Limited
    Inventors: Akira SATOU, Toshiaki YAMAUCHI, Akihide OTAWA