Invention Grant
- Patent Title: Disk array unit
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Application No.: US13482487Application Date: 2012-05-29
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Publication No.: US08929018B2Publication Date: 2015-01-06
- Inventor: Kazuo Hakamata , Kenichi Takamoto , Masaaki Kobayashi
- Applicant: Kazuo Hakamata , Kenichi Takamoto , Masaaki Kobayashi
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP11-097290 19990405
- Main IPC: G11B19/02
- IPC: G11B19/02 ; G06F3/06 ; G06F1/32 ; G11B19/06 ; G11B19/20 ; G11B27/00 ; G11B27/11 ; G11B27/36

Abstract:
A disk array unit connected to a host unit to give information thereto and receive information therefrom. The disk unit includes a plurality of disk units for storing information transmitted from the host unit and a management information recording device, formed by utilizing information storage areas in the disk units, for causing information relating to a logical unit for storing information from the host unit to correspond to information relating to the units. The invention further includes a control unit, when there is no access from the host unit to the logical unit for a predetermined time, for determining the disk units corresponding to the logical unit based on information recorded in the management information recording device and performing power saving of power supply for the disk units.
Public/Granted literature
- US20120233400A1 DISK ARRAY UNIT Public/Granted day:2012-09-13
Information query
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