Invention Grant
- Patent Title: Methods and apparatus for managing error codes for storage systems coupled with external storage systems
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Application No.: US14187498Application Date: 2014-02-24
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Publication No.: US09361177B2Publication Date: 2016-06-07
- Inventor: Tomohiro Kawaguchi , Akira Yamamoto
- Applicant: Hitachi, Ltd., Intellectual Property Group
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, P.C.
- Main IPC: G06F11/08
- IPC: G06F11/08 ; G06F11/10 ; G06F11/00 ; G06F11/20
Abstract:
A system comprising a plurality of storage systems, which uses storage devices of multiple levels of reliability. The reliability as a whole system is increased by keeping the error code for the relatively low reliability storage disks in the relatively high reliability storage system. The error code is calculated using hash functions and the value is used to compare with the hash value of the data read from the relatively low reliability storage disks.
Public/Granted literature
- US20140173390A1 METHODS AND APPARATUS FOR MANAGING ERROR CODES FOR STORAGE SYSTEMS COUPLED WITH EXTERNAL STORAGE SYSTEMS Public/Granted day:2014-06-19
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