Patents by Inventor Yuuhiko TAMURA

Yuuhiko TAMURA 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 APPARATUS TO WHICH THIN PROVISIONING IS APPLIED
    Publication number: 20110283078
    Abstract: At least two virtual volumes of a plurality of virtual volumes are associated with at least one pool. At least two pools of the plurality of pools are associated with each of virtual volumes. At least two pools that are associated with each of virtual volumes have a priority level. A storage control apparatus receives a write command and the write target data from a host apparatus. When a virtual area of a write destination specified by the write command is an unallocated virtual area, the storage control apparatus selects one pool based on the priority level of the pools that are associated with a virtual volume of a write destination specified by the write command. The storage control apparatus allocates an unallocated physical area in the selected pool to a virtual area of a write destination, and writes the write target data to the allocated physical area.
    Type: Application
    Filed: July 13, 2010
    Publication date: November 17, 2011
    Applicant: HITACHI, LTD.
    Inventors: Yuuhiko TAMURA, Tomofumi SUGATA, Minori AWAKURA