Patents by Inventor Mioko Moriguchi

Mioko Moriguchi 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: 10409660
    Abstract: This storage system has a plurality of modules that encode data being written to a storage medium and decode data being read from said storage medium. The storage system also has an adapter that controls the reading and writing of data from and to the storage medium such that, when an error is detected and determined to be the error of at least one of said plurality of modules, the adapter prevents the module(s) in question from being used to read or write data.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: September 10, 2019
    Assignee: HITACHI LTD.
    Inventors: Mioko Moriguchi, Etsutaro Akagawa
  • Patent number: 10296468
    Abstract: An encryption key used with a storing apparatus and an encryption key used with a non-volatile cache memory are identical to each other. A cache control portion unit effects control in such a way that an encryption key EK used to encrypt first data stored in the storing apparatuses, and an encryption key EK used to encrypt second data which are data corresponding to the first data and are stored in the non-volatile cache memory, are identical to each other. If the cache control portion receives a write request and first data WD, the cache control portion identifies from the storing apparatuses a storing apparatus that is to be the storage destination of the first data, identifies an encryption key allocated to the identified storing apparatus, encrypts the second data corresponding to the first data using the identified encryption key, and stores the data in the non-volatile cache memory.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 21, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Mioko Moriguchi, Wataru Okada, Nobuhiro Maki
  • Publication number: 20180052730
    Abstract: This storage system has a plurality of modules that encode data being written to a storage medium and decode data being read from said storage medium. The storage system also has an adapter that controls the reading and writing of data from and to the storage medium such that, when an error is detected and determined to be the error of at least one of said plurality of modules, the adapter prevents the module(s) in question from being used to read or write data.
    Type: Application
    Filed: June 5, 2015
    Publication date: February 22, 2018
    Applicant: HITACHI, LTD.
    Inventors: Mioko MORIGUCHI, Etsutaro AKAGAWA
  • Publication number: 20170235677
    Abstract: A computer system that is composed of a host computer, a storage device and a management computer. The storage device comprises a port for connecting with the host computer, a cache memory, a processor, and a plurality of logic volumes which are logical memory regions. For each logic volume, the port, the cache memory and the processor are divided into logic partitions, as resources that are used for reading and writing in the logic volume. The host computer reads and writes with respect to the logic volumes. If a failure occurs in the storage device, the management computer issues a command to the storage device to allocate the resources of a logic partition for which reading/writing performance is not ensured to a logic partition for which reading/writing performance is ensured.
    Type: Application
    Filed: November 12, 2014
    Publication date: August 17, 2017
    Applicant: Hitach, Ltd.
    Inventors: Hidenori SAKANIWA, Wataru OKADA, Yoshinori OHIRA, Etsutarou AKAGAWA, Nobuhiro MAKI, Mioko MORIGUCHI
  • Publication number: 20170139842
    Abstract: An encryption key used with a storing apparatus and an encryption key used with a non-volatile cache memory are identical to each other. A cache control portion unit effects control in such a way that an encryption key EK used to encrypt first data stored in the storing apparatuses, and an encryption key EK used to encrypt second data which are data corresponding to the first data and are stored in the non-volatile cache memory, are identical to each other. If the cache control portion receives a write request and first data WD, the cache control portion identifies from the storing apparatuses a storing apparatus that is to be the storage destination of the first data, identifies an encryption key allocated to the identified storing apparatus, encrypts the second data corresponding to the first data using the identified encryption key, and stores the data in the non-volatile cache memory.
    Type: Application
    Filed: February 5, 2014
    Publication date: May 18, 2017
    Inventors: Mioko MORIGUCHI, Wataru OKADA, Nobuhiro MAKI
  • Publication number: 20160034721
    Abstract: The present invention curbs encryption key information used in a virtual logical volume and improves security. A storage management function 33201 is configured to provide to a host computer a virtual logical volume 327 created on the basis of a pool volume 324. The storage management function is configured to allocate a prescribed page from among pages in the pool volume to a virtual logical volume in accordance with a write request from the host computer. The storage management function is configured to select a page to be allocated to the virtual logical volume on the basis of information regarding encryption key information associated with a page that has been allocated to the virtual logical volume and information regarding encryption key information associated with a page capable of being allocated to the virtual logical volume from the pages managed in the pool.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 4, 2016
    Applicant: HITACHI, LTD.
    Inventors: Mioko MORIGUCHI, Hirotaka NAKAGAWA, Hiroshi NASU
  • Patent number: 9081509
    Abstract: An example is a method for determining at least one migration destination for resources of one migration source physical storage system, with physical storage systems, which provide resources to a virtual storage system recognized by a host as one storage system, as migration destination candidates. The method defines at least one migration group from the resources included in the migration source physical storage system so that resources for which the predetermined management permissions are assigned to the same administrator are included in the same migration group, and determines at least one migration destination of the at least one migration group, on a condition that resources in the same migration group are migrated to the same physical storage system among the physical storage systems.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: July 14, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Nasu, Mioko Moriguchi
  • Publication number: 20150026421
    Abstract: An example is a method for determining at least one migration destination for resources of one migration source physical storage system, with physical storage systems, which provide resources to a virtual storage system recognized by a host as one storage system, as migration destination candidates. The method defines at least one migration group from the resources included in the migration source physical storage system so that resources for which the predetermined management permissions are assigned to the same administrator are included in the same migration group, and determines at least one migration destination of the at least one migration group, on a condition that resources in the same migration group are migrated to the same physical storage system among the physical storage systems.
    Type: Application
    Filed: October 3, 2012
    Publication date: January 22, 2015
    Inventors: Hiroshi Nasu, Mioko Moriguchi
  • Publication number: 20130208892
    Abstract: When removing an HDD, in which a failure has occurred, after the execution of hot swap in a storage apparatus having a stored data encryption function, an encryption key assigned to that HDD is shredded and thereby data in the HDD is automatically crypto-shredded; and after a new HDD is installed, data in a spare disk regarding which copy back to the new HDD is completed is automatically crypto-shredded and key generation for the spare disk is requested to a security administrator in preparation for the next hot swap.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 15, 2013
    Applicant: HITACHI LTD.
    Inventors: Mioko Moriguchi, Hirotaka Nakagawa