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Shunji Kawamura Phones & Addresses

  • Santa Clara, CA
  • Los Gatos, CA
  • Campbell, CA

Publications

Us Patents

Load Distribution System

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US Patent:
20130138884, May 30, 2013
Filed:
Nov 30, 2011
Appl. No.:
13/307254
Inventors:
Shunji KAWAMURA - Los Gatos CA, US
Assignee:
HITACHI, LTD. - Tokyo
International Classification:
G06F 12/08
G06F 12/00
US Classification:
711119, 711148, 711E12023
Abstract:
Exemplary embodiments of the invention provide load distribution among storage systems using solid state memory (e.g., flash memory) as expanded cache area. In accordance with an aspect of the invention, a system comprises a first storage system and a second storage system. The first storage system changes a mode of operation from a first mode to a second mode based on load of process in the first storage system. The load of process in the first storage system in the first mode is executed by the first storage system. The load of process in the first storage system in the second mode is executed by the first storage system and the second storage system.

Method And Apparatus To Improve Efficiency In The Use Of High Performance Storage Resources In Data Center

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US Patent:
20130185531, Jul 18, 2013
Filed:
Jan 17, 2012
Appl. No.:
13/352115
Inventors:
Shunji Kawamura - Los Gatos CA, US
Assignee:
HITACHI, LTD. - Tokyo
International Classification:
G06F 12/02
US Classification:
711162, 711154, 711E12002
Abstract:
Systems and methods described herein are directed to determining a partial migration plan to execute based on a policy. In situations where the performance of the virtual volumes is insufficient, the virtual volume should be migrated to a different storage pool or have high-performance media added to its current storage pool. A management program creates several migration plans for execution, which may include more than one partial migration plans. The plans may indicate the original storage subsystem, the target storage subsystem and a number of pages. The management program selects one of the plans, and proceeds to execute the selected plan.

Method And Apparatus Of Sanitizing Storage Device

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US Patent:
20130036256, Feb 7, 2013
Filed:
Aug 5, 2011
Appl. No.:
13/204558
Inventors:
Shunji KAWAMURA - Los Gatos CA, US
Assignee:
HITACHI, LTD. - Tokyo
International Classification:
G06F 12/00
US Classification:
711103, 711166, 711114, 711112, 711E12008, 711E12001
Abstract:
Systems and methods directed to erasing data and/or the sanitization of storage systems. In storage systems that utilize storage devices such as Flash Memory Devices or Hard Disk Drives (HDDs), systems and methods utilize the initializing function of the storage device to erase the data. Storage devices within the storage systems may have an initializing function that erases all blocks of the storage device. Systems and methods further check for the initializing function and the media type to determine if the initializing function is available to determine the optimal sanitizing process for the device.
Shunji Kawamura from Santa Clara, CA, age ~48 Get Report